57213233 has 24 divisors (see below), whose sum is σ = 73133280. Its totient is φ = 44257920.

The previous prime is 57213223. The next prime is 57213271. The reversal of 57213233 is 33231275.

It is not a de Polignac number, because 57213233 - 2⁴ = 57213217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57213223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96185 + ... + 96777.

It is an arithmetic number, because the mean of its divisors is an integer number (3047220).

Almost surely, 2^57213233 is an apocalyptic number.

It is an amenable number.

57213233 is a deficient number, since it is larger than the sum of its proper divisors (15920047).

57213233 is a wasteful number, since it uses less digits than its factorization.

57213233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797 (or 790 counting only the distinct ones).

The product of its digits is 3780, while the sum is 26.

The square root of 57213233 is about 7563.9429532487. The cubic root of 57213233 is about 385.3294150341.

The spelling of 57213233 in words is "fifty-seven million, two hundred thirteen thousand, two hundred thirty-three".