57022831 has 2 divisors, whose sum is σ = 57022832. Its totient is φ = 57022830.

The previous prime is 57022813. The next prime is 57022837. The reversal of 57022831 is 13822075.

Together with previous prime (57022813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57022831 - 2⁹ = 57022319 is a prime.

It is a super-2 number, since 2×57022831² = 6503206510509122, 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 57022831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57022837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28511415 + 28511416.

It is an arithmetic number, because the mean of its divisors is an integer number (28511416).

Almost surely, 2^57022831 is an apocalyptic number.

57022831 is a deficient number, since it is larger than the sum of its proper divisors (1).

57022831 is an equidigital number, since it uses as much as digits as its factorization.

57022831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 57022831 is about 7551.3463038057. The cubic root of 57022831 is about 384.9014893854.

The spelling of 57022831 in words is "fifty-seven million, twenty-two thousand, eight hundred thirty-one".