56189657 has 2 divisors, whose sum is σ = 56189658. Its totient is φ = 56189656.

The previous prime is 56189629. The next prime is 56189663. The reversal of 56189657 is 75698165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53743561 + 2446096 = 7331^2 + 1564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56189657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56189057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28094828 + 28094829.

It is an arithmetic number, because the mean of its divisors is an integer number (28094829).

Almost surely, 2^56189657 is an apocalyptic number.

It is an amenable number.

56189657 is a deficient number, since it is larger than the sum of its proper divisors (1).

56189657 is an equidigital number, since it uses as much as digits as its factorization.

56189657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 47.

The square root of 56189657 is about 7495.9760538572. The cubic root of 56189657 is about 383.0176555884.

The spelling of 56189657 in words is "fifty-six million, one hundred eighty-nine thousand, six hundred fifty-seven".