56805197 has 2 divisors, whose sum is σ = 56805198. Its totient is φ = 56805196.

The previous prime is 56805191. The next prime is 56805233. The reversal of 56805197 is 79150865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50282281 + 6522916 = 7091^2 + 2554^2 .

It is a cyclic number.

It is not a de Polignac number, because 56805197 - 2⁴ = 56805181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56805191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28402598 + 28402599.

It is an arithmetic number, because the mean of its divisors is an integer number (28402599).

Almost surely, 2^56805197 is an apocalyptic number.

It is an amenable number.

56805197 is a deficient number, since it is larger than the sum of its proper divisors (1).

56805197 is an equidigital number, since it uses as much as digits as its factorization.

56805197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 56805197 is about 7536.9222498312. The cubic root of 56805197 is about 384.4111919300.

The spelling of 56805197 in words is "fifty-six million, eight hundred five thousand, one hundred ninety-seven".