57672921 has 8 divisors (see below), whose sum is σ = 76967584. Its totient is φ = 38413440.

The previous prime is 57672883. The next prime is 57672931. The reversal of 57672921 is 12927675.

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

It is not a de Polignac number, because 57672921 - 2¹³ = 57664729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57672921.

It is not an unprimeable number, because it can be changed into a prime (57672931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4696 + ... + 11721.

It is an arithmetic number, because the mean of its divisors is an integer number (9620948).

Almost surely, 2^57672921 is an apocalyptic number.

It is an amenable number.

57672921 is a deficient number, since it is larger than the sum of its proper divisors (19294663).

57672921 is a wasteful number, since it uses less digits than its factorization.

57672921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17591.

The product of its digits is 52920, while the sum is 39.

The square root of 57672921 is about 7594.2689575758. The cubic root of 57672921 is about 386.3586583836.

The spelling of 57672921 in words is "fifty-seven million, six hundred seventy-two thousand, nine hundred twenty-one".