57228233 has 4 divisors (see below), whose sum is σ = 58774980. Its totient is φ = 55681488.

The previous prime is 57228173. The next prime is 57228253. The reversal of 57228233 is 33282275.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30063289 + 27164944 = 5483^2 + 5212^2 .

It is a cyclic number.

It is not a de Polignac number, because 57228233 - 2¹² = 57224137 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 57228233.

It is not an unprimeable number, because it can be changed into a prime (57228253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773318 + ... + 773391.

It is an arithmetic number, because the mean of its divisors is an integer number (14693745).

Almost surely, 2^57228233 is an apocalyptic number.

It is an amenable number.

57228233 is a deficient number, since it is larger than the sum of its proper divisors (1546747).

57228233 is a wasteful number, since it uses less digits than its factorization.

57228233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546746.

The product of its digits is 20160, while the sum is 32.

The square root of 57228233 is about 7564.9344346134. The cubic root of 57228233 is about 385.3630869422.

The spelling of 57228233 in words is "fifty-seven million, two hundred twenty-eight thousand, two hundred thirty-three".