56601397 has 2 divisors, whose sum is σ = 56601398. Its totient is φ = 56601396.

The previous prime is 56601329. The next prime is 56601407. The reversal of 56601397 is 79310665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40271716 + 16329681 = 6346^2 + 4041^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56601397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56601317) 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, 28300698 + 28300699.

It is an arithmetic number, because the mean of its divisors is an integer number (28300699).

Almost surely, 2^56601397 is an apocalyptic number.

It is an amenable number.

56601397 is a deficient number, since it is larger than the sum of its proper divisors (1).

56601397 is an equidigital number, since it uses as much as digits as its factorization.

56601397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 56601397 is about 7523.3899938791. The cubic root of 56601397 is about 383.9509237231.

The spelling of 56601397 in words is "fifty-six million, six hundred one thousand, three hundred ninety-seven".