255657023 has 4 divisors (see below), whose sum is σ = 259159248. Its totient is φ = 252154800.

The previous prime is 255656977. The next prime is 255657041. The reversal of 255657023 is 320756552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255657023 - 2⁶ = 255656959 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 (255657323) 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, 1751003 + ... + 1751148.

It is an arithmetic number, because the mean of its divisors is an integer number (64789812).

Almost surely, 2^255657023 is an apocalyptic number.

255657023 is a deficient number, since it is larger than the sum of its proper divisors (3502225).

255657023 is an equidigital number, since it uses as much as digits as its factorization.

255657023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502224.

The product of its (nonzero) digits is 63000, while the sum is 35.

The square root of 255657023 is about 15989.2783764621. The cubic root of 255657023 is about 634.6767304898.

The spelling of 255657023 in words is "two hundred fifty-five million, six hundred fifty-seven thousand, twenty-three".