57222931 has 4 divisors (see below), whose sum is σ = 59068864. Its totient is φ = 55377000.

The previous prime is 57222917. The next prime is 57222953. The reversal of 57222931 is 13922275.

57222931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 57222931 - 2⁹ = 57222419 is a prime.

It is a super-2 number, since 2×57222931² = 6548927664461522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1845901 = 57222931 / (5 + 7 + 2 + 2 + 2 + 9 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57222893 and 57222902.

It is not an unprimeable number, because it can be changed into a prime (57222961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922920 + ... + 922981.

It is an arithmetic number, because the mean of its divisors is an integer number (14767216).

Almost surely, 2^57222931 is an apocalyptic number.

57222931 is a deficient number, since it is larger than the sum of its proper divisors (1845933).

57222931 is a wasteful number, since it uses less digits than its factorization.

57222931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845932.

The product of its digits is 7560, while the sum is 31.

The square root of 57222931 is about 7564.5839938492. The cubic root of 57222931 is about 385.3511857175.

The spelling of 57222931 in words is "fifty-seven million, two hundred twenty-two thousand, nine hundred thirty-one".