57256423 has 4 divisors (see below), whose sum is σ = 65435920. Its totient is φ = 49076928.

The previous prime is 57256417. The next prime is 57256429. The reversal of 57256423 is 32465275.

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

It is an interprime number because it is at equal distance from previous prime (57256417) and next prime (57256429).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57256423 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 (57256429) 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, 4089738 + ... + 4089751.

It is an arithmetic number, because the mean of its divisors is an integer number (16358980).

Almost surely, 2^57256423 is an apocalyptic number.

57256423 is a deficient number, since it is larger than the sum of its proper divisors (8179497).

57256423 is an equidigital number, since it uses as much as digits as its factorization.

57256423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8179496.

The product of its digits is 50400, while the sum is 34.

The square root of 57256423 is about 7566.7974070937. The cubic root of 57256423 is about 385.4263517657.

The spelling of 57256423 in words is "fifty-seven million, two hundred fifty-six thousand, four hundred twenty-three".