255536913 has 4 divisors (see below), whose sum is σ = 340715888. Its totient is φ = 170357940.

The previous prime is 255536873. The next prime is 255536927. The reversal of 255536913 is 319635552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 255536913 - 2²⁶ = 188428049 is a prime.

It is a super-2 number, since 2×255536913² = 130598227811139138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255536933) 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, 42589483 + ... + 42589488.

It is an arithmetic number, because the mean of its divisors is an integer number (85178972).

Almost surely, 2^255536913 is an apocalyptic number.

It is an amenable number.

255536913 is a deficient number, since it is larger than the sum of its proper divisors (85178975).

255536913 is an equidigital number, since it uses as much as digits as its factorization.

255536913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85178974.

The product of its digits is 121500, while the sum is 39.

The square root of 255536913 is about 15985.5219808425. The cubic root of 255536913 is about 634.5773226160.

The spelling of 255536913 in words is "two hundred fifty-five million, five hundred thirty-six thousand, nine hundred thirteen".