57572021 has 8 divisors (see below), whose sum is σ = 62490624. Its totient is φ = 52723440.

The previous prime is 57572003. The next prime is 57572027. The reversal of 57572021 is 12027575.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57572021 - 2¹⁸ = 57309877 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 (57572027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15785 + ... + 19086.

It is an arithmetic number, because the mean of its divisors is an integer number (7811328).

Almost surely, 2^57572021 is an apocalyptic number.

It is an amenable number.

57572021 is a deficient number, since it is larger than the sum of its proper divisors (4918603).

57572021 is a wasteful number, since it uses less digits than its factorization.

57572021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35011.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 57572021 is about 7587.6228820362. The cubic root of 57572021 is about 386.1332126326.

Adding to 57572021 its reverse (12027575), we get a palindrome (69599596).

The spelling of 57572021 in words is "fifty-seven million, five hundred seventy-two thousand, twenty-one".