57255751 has 4 divisors (see below), whose sum is σ = 65435152. Its totient is φ = 49076352.

The previous prime is 57255713. The next prime is 57255767. The reversal of 57255751 is 15755275.

It is a happy number.

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 57255751 - 2⁹ = 57255239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57255751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57255851) 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, 4089690 + ... + 4089703.

It is an arithmetic number, because the mean of its divisors is an integer number (16358788).

Almost surely, 2^57255751 is an apocalyptic number.

57255751 is a deficient number, since it is larger than the sum of its proper divisors (8179401).

57255751 is an equidigital number, since it uses as much as digits as its factorization.

57255751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8179400.

The product of its digits is 61250, while the sum is 37.

The square root of 57255751 is about 7566.7530024443. The cubic root of 57255751 is about 385.4248438853.

It can be divided in two parts, 5725 and 5751, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 57255751 in words is "fifty-seven million, two hundred fifty-five thousand, seven hundred fifty-one".