255770317 has 4 divisors (see below), whose sum is σ = 279022176. Its totient is φ = 232518460.

The previous prime is 255770303. The next prime is 255770363. The reversal of 255770317 is 713077552.

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-255770317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255770017) 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, 11625913 + ... + 11625934.

It is an arithmetic number, because the mean of its divisors is an integer number (69755544).

Almost surely, 2^255770317 is an apocalyptic number.

It is an amenable number.

255770317 is a deficient number, since it is larger than the sum of its proper divisors (23251859).

255770317 is a wasteful number, since it uses less digits than its factorization.

255770317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23251858.

The product of its (nonzero) digits is 51450, while the sum is 37.

The square root of 255770317 is about 15992.8207955945. The cubic root of 255770317 is about 634.7704686365.

The spelling of 255770317 in words is "two hundred fifty-five million, seven hundred seventy thousand, three hundred seventeen".