56164397 has 2 divisors, whose sum is σ = 56164398. Its totient is φ = 56164396.

The previous prime is 56164393. The next prime is 56164403. The reversal of 56164397 is 79346165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50495236 + 5669161 = 7106^2 + 2381^2 .

It is a cyclic number.

It is not a de Polignac number, because 56164397 - 2² = 56164393 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56164391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28082198 + 28082199.

It is an arithmetic number, because the mean of its divisors is an integer number (28082199).

Almost surely, 2^56164397 is an apocalyptic number.

It is an amenable number.

56164397 is a deficient number, since it is larger than the sum of its proper divisors (1).

56164397 is an equidigital number, since it uses as much as digits as its factorization.

56164397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The square root of 56164397 is about 7494.2909604578. The cubic root of 56164397 is about 382.9602519270.

The spelling of 56164397 in words is "fifty-six million, one hundred sixty-four thousand, three hundred ninety-seven".