57022813 has 2 divisors, whose sum is σ = 57022814. Its totient is φ = 57022812.

The previous prime is 57022793. The next prime is 57022831. The reversal of 57022813 is 31822075.

Together with next prime (57022831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50168889 + 6853924 = 7083^2 + 2618^2 .

It is a cyclic number.

It is not a de Polignac number, because 57022813 - 2¹³ = 57014621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57022213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28511406 + 28511407.

It is an arithmetic number, because the mean of its divisors is an integer number (28511407).

Almost surely, 2^57022813 is an apocalyptic number.

It is an amenable number.

57022813 is a deficient number, since it is larger than the sum of its proper divisors (1).

57022813 is an equidigital number, since it uses as much as digits as its factorization.

57022813 is an evil number, because the sum of its binary digits is even.

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

The square root of 57022813 is about 7551.3451119652. The cubic root of 57022813 is about 384.9014488856.

Adding to 57022813 its reverse (31822075), we get a palindrome (88844888).

It can be divided in two parts, 5702 and 2813, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 57022813 in words is "fifty-seven million, twenty-two thousand, eight hundred thirteen".