56210197 has 2 divisors, whose sum is σ = 56210198. Its totient is φ = 56210196.

The previous prime is 56210153. The next prime is 56210213. The reversal of 56210197 is 79101265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38452401 + 17757796 = 6201^2 + 4214^2 .

It is a cyclic number.

It is not a de Polignac number, because 56210197 - 2⁷ = 56210069 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 (56217197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28105098 + 28105099.

It is an arithmetic number, because the mean of its divisors is an integer number (28105099).

Almost surely, 2^56210197 is an apocalyptic number.

56210197 is the 4008-th centered heptagonal number.

It is an amenable number.

56210197 is a deficient number, since it is larger than the sum of its proper divisors (1).

56210197 is an equidigital number, since it uses as much as digits as its factorization.

56210197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 56210197 is about 7497.3459970846. The cubic root of 56210197 is about 383.0643203108.

The spelling of 56210197 in words is "fifty-six million, two hundred ten thousand, one hundred ninety-seven".