56778169 has 8 divisors (see below), whose sum is σ = 65711360. Its totient is φ = 48050496.

The previous prime is 56778167. The next prime is 56778193. The reversal of 56778169 is 96187765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56778169 - 2¹ = 56778167 is a prime.

It is a super-2 number, since 2×56778169² = 6447520949985122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56778167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50784 + ... + 51889.

It is an arithmetic number, because the mean of its divisors is an integer number (8213920).

Almost surely, 2^56778169 is an apocalyptic number.

It is an amenable number.

56778169 is a deficient number, since it is larger than the sum of its proper divisors (8933191).

56778169 is a wasteful number, since it uses less digits than its factorization.

56778169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102759.

The product of its digits is 635040, while the sum is 49.

The square root of 56778169 is about 7535.1289969051. The cubic root of 56778169 is about 384.3502144460.

The spelling of 56778169 in words is "fifty-six million, seven hundred seventy-eight thousand, one hundred sixty-nine".