57256236 has 36 divisors (see below), whose sum is σ = 146720392. Its totient is φ = 18823104.

The previous prime is 57256231. The next prime is 57256249. The reversal of 57256236 is 63265275.

It is a happy number.

57256236 is a `hidden beast` number, since 5 + 7 + 25 + 623 + 6 = 666.

57256236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

57256236 is a Rhonda number in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 57256236.

It is not an unprimeable number, because it can be changed into a prime (57256231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8266 + ... + 13521.

Almost surely, 2^57256236 is an apocalyptic number.

It is an amenable number.

57256236 is an abundant number, since it is smaller than the sum of its proper divisors (89464156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57256236 is a wasteful number, since it uses less digits than its factorization.

57256236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21870 (or 21865 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 57256236 is about 7566.7850504689. The cubic root of 57256236 is about 385.4259321633.

The spelling of 57256236 in words is "fifty-seven million, two hundred fifty-six thousand, two hundred thirty-six".