56536993 has 2 divisors, whose sum is σ = 56536994. Its totient is φ = 56536992.

The previous prime is 56536897. The next prime is 56537017. The reversal of 56536993 is 39963565.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52896529 + 3640464 = 7273^2 + 1908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56536993 is a prime.

It is not a weakly prime, because it can be changed into another prime (56536793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28268496 + 28268497.

It is an arithmetic number, because the mean of its divisors is an integer number (28268497).

Almost surely, 2^56536993 is an apocalyptic number.

It is an amenable number.

56536993 is a deficient number, since it is larger than the sum of its proper divisors (1).

56536993 is an equidigital number, since it uses as much as digits as its factorization.

56536993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 656100, while the sum is 46.

The square root of 56536993 is about 7519.1085242866. The cubic root of 56536993 is about 383.8052420412.

The spelling of 56536993 in words is "fifty-six million, five hundred thirty-six thousand, nine hundred ninety-three".