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130555 = 526111
BaseRepresentation
bin11111110111111011
320122002101
4133313323
513134210
62444231
71052425
oct376773
9218071
10130555
118a0a7
1263677
1347569
1435815
1528a3a
hex1fdfb

130555 has 4 divisors (see below), whose sum is σ = 156672. Its totient is φ = 104440.

The previous prime is 130553. The next prime is 130579. The reversal of 130555 is 555031.

130555 = 1452 + 1462 + ... + 1502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555031 = 2919139.

It is not a de Polignac number, because 130555 - 21 = 130553 is a prime.

It is a Duffinian number.

130555 is a modest number, since divided by 555 gives 130 as remainder.

It is not an unprimeable number, because it can be changed into a prime (130553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13051 + ... + 13060.

It is an arithmetic number, because the mean of its divisors is an integer number (39168).

2130555 is an apocalyptic number.

130555 is a deficient number, since it is larger than the sum of its proper divisors (26117).

130555 is an equidigital number, since it uses as much as digits as its factorization.

130555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26116.

The product of its (nonzero) digits is 375, while the sum is 19.

The square root of 130555 is about 361.3239543678. The cubic root of 130555 is about 50.7299580321.

Adding to 130555 its reverse (555031), we get a palindrome (685586).

The spelling of 130555 in words is "one hundred thirty thousand, five hundred fifty-five".

Divisors: 1 5 26111 130555
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