56688377 has 2 divisors, whose sum is σ = 56688378. Its totient is φ = 56688376.

The previous prime is 56688361. The next prime is 56688383. The reversal of 56688377 is 77388665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31125241 + 25563136 = 5579^2 + 5056^2 .

It is a cyclic number.

It is not a de Polignac number, because 56688377 - 2⁴ = 56688361 is a prime.

It is not a weakly prime, because it can be changed into another prime (56681377) 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, 28344188 + 28344189.

It is an arithmetic number, because the mean of its divisors is an integer number (28344189).

Almost surely, 2^56688377 is an apocalyptic number.

It is an amenable number.

56688377 is a deficient number, since it is larger than the sum of its proper divisors (1).

56688377 is an equidigital number, since it uses as much as digits as its factorization.

56688377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 50.

The square root of 56688377 is about 7529.1684135766. The cubic root of 56688377 is about 384.1474969587.

The spelling of 56688377 in words is "fifty-six million, six hundred eighty-eight thousand, three hundred seventy-seven".