255562657 has 4 divisors (see below), whose sum is σ = 292071616. Its totient is φ = 219053700.

The previous prime is 255562639. The next prime is 255562691. The reversal of 255562657 is 756265552.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255562657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255562607) 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, 18254469 + ... + 18254482.

It is an arithmetic number, because the mean of its divisors is an integer number (73017904).

Almost surely, 2^255562657 is an apocalyptic number.

It is an amenable number.

255562657 is a deficient number, since it is larger than the sum of its proper divisors (36508959).

255562657 is an equidigital number, since it uses as much as digits as its factorization.

255562657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36508958.

The product of its digits is 630000, while the sum is 43.

The square root of 255562657 is about 15986.3271891951. The cubic root of 255562657 is about 634.5986320097.

The spelling of 255562657 in words is "two hundred fifty-five million, five hundred sixty-two thousand, six hundred fifty-seven".