56377513 has 2 divisors, whose sum is σ = 56377514. Its totient is φ = 56377512.

The previous prime is 56377463. The next prime is 56377523. The reversal of 56377513 is 31577365.

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., 51724864 + 4652649 = 7192^2 + 2157^2 .

It is a cyclic number.

It is not a de Polignac number, because 56377513 - 2²¹ = 54280361 is a prime.

It is equal to p_3359539 and since 56377513 and 3359539 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (56377523) 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, 28188756 + 28188757.

It is an arithmetic number, because the mean of its divisors is an integer number (28188757).

Almost surely, 2^56377513 is an apocalyptic number.

It is an amenable number.

56377513 is a deficient number, since it is larger than the sum of its proper divisors (1).

56377513 is an equidigital number, since it uses as much as digits as its factorization.

56377513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 66150, while the sum is 37.

The square root of 56377513 is about 7508.4960544706. The cubic root of 56377513 is about 383.4440218895. Note that the first 3 decimals are identical.

The spelling of 56377513 in words is "fifty-six million, three hundred seventy-seven thousand, five hundred thirteen".