56217769 has 4 divisors (see below), whose sum is σ = 56317140. Its totient is φ = 56118400.

The previous prime is 56217767. The next prime is 56217779. The reversal of 56217769 is 96771265.

56217769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96771265 = 5 ⋅19354253.

It can be written as a sum of positive squares in 2 ways, for example, as 26132544 + 30085225 = 5112^2 + 5485^2 .

It is a cyclic number.

It is not a de Polignac number, because 56217769 - 2¹ = 56217767 is a prime.

It is a super-2 number, since 2×56217769² = 6320875102674722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56217767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48832 + ... + 49969.

It is an arithmetic number, because the mean of its divisors is an integer number (14079285).

Almost surely, 2^56217769 is an apocalyptic number.

It is an amenable number.

56217769 is a deficient number, since it is larger than the sum of its proper divisors (99371).

56217769 is an equidigital number, since it uses as much as digits as its factorization.

56217769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99370.

The product of its digits is 158760, while the sum is 43.

The square root of 56217769 is about 7497.8509587748. The cubic root of 56217769 is about 383.0815202315.

The spelling of 56217769 in words is "fifty-six million, two hundred seventeen thousand, seven hundred sixty-nine".