57225631 has 2 divisors, whose sum is σ = 57225632. Its totient is φ = 57225630.

The previous prime is 57225617. The next prime is 57225653. The reversal of 57225631 is 13652275.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57225631 - 2¹⁷ = 57094559 is a prime.

It is a super-2 number, since 2×57225631² = 6549545686696322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57225593 and 57225602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57225611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28612815 + 28612816.

It is an arithmetic number, because the mean of its divisors is an integer number (28612816).

Almost surely, 2^57225631 is an apocalyptic number.

57225631 is a deficient number, since it is larger than the sum of its proper divisors (1).

57225631 is an equidigital number, since it uses as much as digits as its factorization.

57225631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 31.

The square root of 57225631 is about 7564.7624549618. The cubic root of 57225631 is about 385.3572464104.

The spelling of 57225631 in words is "fifty-seven million, two hundred twenty-five thousand, six hundred thirty-one".