56803657 has 2 divisors, whose sum is σ = 56803658. Its totient is φ = 56803656.

The previous prime is 56803619. The next prime is 56803661. The reversal of 56803657 is 75630865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36228361 + 20575296 = 6019^2 + 4536^2 .

It is a cyclic number.

It is not a de Polignac number, because 56803657 - 2²³ = 48415049 is a prime.

It is not a weakly prime, because it can be changed into another prime (56806657) 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, 28401828 + 28401829.

It is an arithmetic number, because the mean of its divisors is an integer number (28401829).

Almost surely, 2^56803657 is an apocalyptic number.

It is an amenable number.

56803657 is a deficient number, since it is larger than the sum of its proper divisors (1).

56803657 is an equidigital number, since it uses as much as digits as its factorization.

56803657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 56803657 is about 7536.8200854206. The cubic root of 56803657 is about 384.4077180778.

The spelling of 56803657 in words is "fifty-six million, eight hundred three thousand, six hundred fifty-seven".