57272544 has 72 divisors (see below), whose sum is σ = 186142320. Its totient is φ = 16363008.

The previous prime is 57272543. The next prime is 57272549. The reversal of 57272544 is 44527275.

It is a happy number.

57272544 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 (72).

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

It is a junction number, because it is equal to n+sod(n) for n = 57272499 and 57272508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57272543) 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, 12189 + ... + 16220.

It is an arithmetic number, because the mean of its divisors is an integer number (2585310).

Almost surely, 2^57272544 is an apocalyptic number.

It is an amenable number.

57272544 is an abundant number, since it is smaller than the sum of its proper divisors (128869776).

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

57272544 is a wasteful number, since it uses less digits than its factorization.

57272544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28432 (or 28421 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 57272544 is about 7567.8625780335. The cubic root of 57272544 is about 385.4625216533.

The spelling of 57272544 in words is "fifty-seven million, two hundred seventy-two thousand, five hundred forty-four".