56209897 has 2 divisors, whose sum is σ = 56209898. Its totient is φ = 56209896.

The previous prime is 56209849. The next prime is 56209921. The reversal of 56209897 is 79890265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56190016 + 19881 = 7496^2 + 141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56209897 is a prime.

It is not a weakly prime, because it can be changed into another prime (56209807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28104948 + 28104949.

It is an arithmetic number, because the mean of its divisors is an integer number (28104949).

Almost surely, 2^56209897 is an apocalyptic number.

It is an amenable number.

56209897 is a deficient number, since it is larger than the sum of its proper divisors (1).

56209897 is an equidigital number, since it uses as much as digits as its factorization.

56209897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 56209897 is about 7497.3259899780. The cubic root of 56209897 is about 383.0636388241.

The spelling of 56209897 in words is "fifty-six million, two hundred nine thousand, eight hundred ninety-seven".