57421233 has 12 divisors (see below), whose sum is σ = 83054608. Its totient is φ = 38228760.

The previous prime is 57421183. The next prime is 57421237. The reversal of 57421233 is 33212475.

57421233 is a `hidden beast` number, since 5 + 7 + 421 + 233 = 666.

It is not a de Polignac number, because 57421233 - 2¹² = 57417137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57421197 and 57421206.

It is not an unprimeable number, because it can be changed into a prime (57421237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3366 + ... + 11232.

Almost surely, 2^57421233 is an apocalyptic number.

It is an amenable number.

57421233 is a deficient number, since it is larger than the sum of its proper divisors (25633375).

57421233 is a wasteful number, since it uses less digits than its factorization.

57421233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8684 (or 8681 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 57421233 is about 7577.6799219814. The cubic root of 57421233 is about 385.7958082242.

The spelling of 57421233 in words is "fifty-seven million, four hundred twenty-one thousand, two hundred thirty-three".