57160621 has 16 divisors (see below), whose sum is σ = 67775488. Its totient is φ = 47174400.

The previous prime is 57160619. The next prime is 57160627. The reversal of 57160621 is 12606175.

It is not a de Polignac number, because 57160621 - 2¹ = 57160619 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 57160621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57160627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51751 + ... + 52843.

It is an arithmetic number, because the mean of its divisors is an integer number (4235968).

Almost surely, 2^57160621 is an apocalyptic number.

It is an amenable number.

57160621 is a deficient number, since it is larger than the sum of its proper divisors (10614867).

57160621 is a wasteful number, since it uses less digits than its factorization.

57160621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 57160621 is about 7560.4643375920. The cubic root of 57160621 is about 385.2112653947.

Adding to 57160621 its reverse (12606175), we get a palindrome (69766796).

The spelling of 57160621 in words is "fifty-seven million, one hundred sixty thousand, six hundred twenty-one".