56836513 has 2 divisors, whose sum is σ = 56836514. Its totient is φ = 56836512.

The previous prime is 56836499. The next prime is 56836523. The reversal of 56836513 is 31563865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46895104 + 9941409 = 6848^2 + 3153^2 .

It is a cyclic number.

It is not a de Polignac number, because 56836513 - 2⁹ = 56836001 is a prime.

It is not a weakly prime, because it can be changed into another prime (56836523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28418256 + 28418257.

It is an arithmetic number, because the mean of its divisors is an integer number (28418257).

Almost surely, 2^56836513 is an apocalyptic number.

It is an amenable number.

56836513 is a deficient number, since it is larger than the sum of its proper divisors (1).

56836513 is an equidigital number, since it uses as much as digits as its factorization.

56836513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The square root of 56836513 is about 7538.9994694256. Note that the first 3 decimals coincide. The cubic root of 56836513 is about 384.4818193258.

The spelling of 56836513 in words is "fifty-six million, eight hundred thirty-six thousand, five hundred thirteen".