56659397 has 2 divisors, whose sum is σ = 56659398. Its totient is φ = 56659396.

The previous prime is 56659381. The next prime is 56659433. The reversal of 56659397 is 79395665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48080356 + 8579041 = 6934^2 + 2929^2 .

It is a cyclic number.

It is not a de Polignac number, because 56659397 - 2⁴ = 56659381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56658397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28329698 + 28329699.

It is an arithmetic number, because the mean of its divisors is an integer number (28329699).

Almost surely, 2^56659397 is an apocalyptic number.

It is an amenable number.

56659397 is a deficient number, since it is larger than the sum of its proper divisors (1).

56659397 is an equidigital number, since it uses as much as digits as its factorization.

56659397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1530900, while the sum is 50.

The square root of 56659397 is about 7527.2436522276. The cubic root of 56659397 is about 384.0820250305.

The spelling of 56659397 in words is "fifty-six million, six hundred fifty-nine thousand, three hundred ninety-seven".