57222631 has 2 divisors, whose sum is σ = 57222632. Its totient is φ = 57222630.

The previous prime is 57222601. The next prime is 57222647. The reversal of 57222631 is 13622275.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57222631 - 2¹⁵ = 57189863 is a prime.

It is a super-2 number, since 2×57222631² = 6548858997124322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 57222631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57222601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28611315 + 28611316.

It is an arithmetic number, because the mean of its divisors is an integer number (28611316).

Almost surely, 2^57222631 is an apocalyptic number.

57222631 is a deficient number, since it is larger than the sum of its proper divisors (1).

57222631 is an equidigital number, since it uses as much as digits as its factorization.

57222631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 57222631 is about 7564.5641645768. The cubic root of 57222631 is about 385.3505122954.

The spelling of 57222631 in words is "fifty-seven million, two hundred twenty-two thousand, six hundred thirty-one".