56938169 has 2 divisors, whose sum is σ = 56938170. Its totient is φ = 56938168.

The previous prime is 56938157. The next prime is 56938171. The reversal of 56938169 is 96183965.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55279225 + 1658944 = 7435^2 + 1288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56938169 is a prime.

It is a super-2 number, since 2×56938169² = 6483910178145122, which contains 22 as substring.

Together with 56938171, 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 (56938109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28469084 + 28469085.

It is an arithmetic number, because the mean of its divisors is an integer number (28469085).

Almost surely, 2^56938169 is an apocalyptic number.

It is an amenable number.

56938169 is a deficient number, since it is larger than the sum of its proper divisors (1).

56938169 is an equidigital number, since it uses as much as digits as its factorization.

56938169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 47.

The square root of 56938169 is about 7545.7384661808. The cubic root of 56938169 is about 384.7109068313.

The spelling of 56938169 in words is "fifty-six million, nine hundred thirty-eight thousand, one hundred sixty-nine".