56569369 has 2 divisors, whose sum is σ = 56569370. Its totient is φ = 56569368.

The previous prime is 56569361. The next prime is 56569417. The reversal of 56569369 is 96396565.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42968025 + 13601344 = 6555^2 + 3688^2 .

It is a cyclic number.

It is not a de Polignac number, because 56569369 - 2³ = 56569361 is a prime.

It is a super-2 number, since 2×56569369² = 6400187018116322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56569361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28284684 + 28284685.

It is an arithmetic number, because the mean of its divisors is an integer number (28284685).

Almost surely, 2^56569369 is an apocalyptic number.

It is an amenable number.

56569369 is a deficient number, since it is larger than the sum of its proper divisors (1).

56569369 is an equidigital number, since it uses as much as digits as its factorization.

56569369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1312200, while the sum is 49.

The square root of 56569369 is about 7521.2611309540. The cubic root of 56569369 is about 383.8784902908.

The spelling of 56569369 in words is "fifty-six million, five hundred sixty-nine thousand, three hundred sixty-nine".