57421131 has 8 divisors (see below), whose sum is σ = 79201680. Its totient is φ = 36960672.

The previous prime is 57421129. The next prime is 57421139. The reversal of 57421131 is 13112475.

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

It is not a de Polignac number, because 57421131 - 2¹ = 57421129 is a prime.

It is a super-2 number, since 2×57421131² = 6594372570638322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57421139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329920 + ... + 330093.

It is an arithmetic number, because the mean of its divisors is an integer number (9900210).

Almost surely, 2^57421131 is an apocalyptic number.

57421131 is a deficient number, since it is larger than the sum of its proper divisors (21780549).

57421131 is a wasteful number, since it uses less digits than its factorization.

57421131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660045.

The product of its digits is 840, while the sum is 24.

The square root of 57421131 is about 7577.6731916862. The cubic root of 57421131 is about 385.7955797884.

The spelling of 57421131 in words is "fifty-seven million, four hundred twenty-one thousand, one hundred thirty-one".