56597689 has 2 divisors, whose sum is σ = 56597690. Its totient is φ = 56597688.

The previous prime is 56597663. The next prime is 56597701. The reversal of 56597689 is 98679565.

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., 30250000 + 26347689 = 5500^2 + 5133^2 .

It is a cyclic number.

It is not a de Polignac number, because 56597689 - 2¹⁹ = 56073401 is a prime.

It is not a weakly prime, because it can be changed into another prime (56597609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28298844 + 28298845.

It is an arithmetic number, because the mean of its divisors is an integer number (28298845).

Almost surely, 2^56597689 is an apocalyptic number.

It is an amenable number.

56597689 is a deficient number, since it is larger than the sum of its proper divisors (1).

56597689 is an equidigital number, since it uses as much as digits as its factorization.

56597689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4082400, while the sum is 55.

The square root of 56597689 is about 7523.1435583804. The cubic root of 56597689 is about 383.9425392356.

The spelling of 56597689 in words is "fifty-six million, five hundred ninety-seven thousand, six hundred eighty-nine".