56611397 has 2 divisors, whose sum is σ = 56611398. Its totient is φ = 56611396.

The previous prime is 56611381. The next prime is 56611421. The reversal of 56611397 is 79311665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49477156 + 7134241 = 7034^2 + 2671^2 .

It is a cyclic number.

It is not a de Polignac number, because 56611397 - 2⁴ = 56611381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56611397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56611307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28305698 + 28305699.

It is an arithmetic number, because the mean of its divisors is an integer number (28305699).

Almost surely, 2^56611397 is an apocalyptic number.

It is an amenable number.

56611397 is a deficient number, since it is larger than the sum of its proper divisors (1).

56611397 is an equidigital number, since it uses as much as digits as its factorization.

56611397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 38.

The square root of 56611397 is about 7524.0545585475. The cubic root of 56611397 is about 383.9735337843.

The spelling of 56611397 in words is "fifty-six million, six hundred eleven thousand, three hundred ninety-seven".