57523681 has 2 divisors, whose sum is σ = 57523682. Its totient is φ = 57523680.

The previous prime is 57523663. The next prime is 57523727. The reversal of 57523681 is 18632575.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49773025 + 7750656 = 7055^2 + 2784^2 .

It is a cyclic number.

It is not a de Polignac number, because 57523681 - 2⁵ = 57523649 is a prime.

It is a super-2 number, since 2×57523681² = 6617947751579522, 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 57523681.

It is not a weakly prime, because it can be changed into another prime (57523181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28761840 + 28761841.

It is an arithmetic number, because the mean of its divisors is an integer number (28761841).

Almost surely, 2^57523681 is an apocalyptic number.

It is an amenable number.

57523681 is a deficient number, since it is larger than the sum of its proper divisors (1).

57523681 is an equidigital number, since it uses as much as digits as its factorization.

57523681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 57523681 is about 7584.4367622125. The cubic root of 57523681 is about 386.0251108974.

The spelling of 57523681 in words is "fifty-seven million, five hundred twenty-three thousand, six hundred eighty-one".