56908169 has 2 divisors, whose sum is σ = 56908170. Its totient is φ = 56908168.

The previous prime is 56908127. The next prime is 56908171. The reversal of 56908169 is 96180965.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54582544 + 2325625 = 7388^2 + 1525^2 .

It is a cyclic number.

It is not a de Polignac number, because 56908169 - 2⁸ = 56907913 is a prime.

It is a super-2 number, since 2×56908169² = 6477079397865122, which contains 22 as substring.

Together with 56908171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56908199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28454084 + 28454085.

It is an arithmetic number, because the mean of its divisors is an integer number (28454085).

Almost surely, 2^56908169 is an apocalyptic number.

It is an amenable number.

56908169 is a deficient number, since it is larger than the sum of its proper divisors (1).

56908169 is an equidigital number, since it uses as much as digits as its factorization.

56908169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 56908169 is about 7543.7503272577. The cubic root of 56908169 is about 384.6433285266.

The spelling of 56908169 in words is "fifty-six million, nine hundred eight thousand, one hundred sixty-nine".