56163197 has 2 divisors, whose sum is σ = 56163198. Its totient is φ = 56163196.

The previous prime is 56163181. The next prime is 56163251. The reversal of 56163197 is 79136165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53377636 + 2785561 = 7306^2 + 1669^2 .

It is a cyclic number.

It is not a de Polignac number, because 56163197 - 2⁴ = 56163181 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56163197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56163137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28081598 + 28081599.

It is an arithmetic number, because the mean of its divisors is an integer number (28081599).

Almost surely, 2^56163197 is an apocalyptic number.

It is an amenable number.

56163197 is a deficient number, since it is larger than the sum of its proper divisors (1).

56163197 is an equidigital number, since it uses as much as digits as its factorization.

56163197 is an evil number, because the sum of its binary digits is even.

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

The square root of 56163197 is about 7494.2108990874. The cubic root of 56163197 is about 382.9575244840.

The spelling of 56163197 in words is "fifty-six million, one hundred sixty-three thousand, one hundred ninety-seven".