55786569 has 16 divisors (see below), whose sum is σ = 77862912. Its totient is φ = 35461008.

The previous prime is 55786567. The next prime is 55786579. The reversal of 55786569 is 96568755.

55786569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55786569 - 2¹ = 55786567 is a prime.

It is a super-2 number, since 2×55786569² = 6224282561583522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55786567) 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 15 ways as a sum of consecutive naturals, for example, 24222 + ... + 26424.

It is an arithmetic number, because the mean of its divisors is an integer number (4866432).

Almost surely, 2^55786569 is an apocalyptic number.

It is an amenable number.

55786569 is a deficient number, since it is larger than the sum of its proper divisors (22076343).

55786569 is a wasteful number, since it uses less digits than its factorization.

55786569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596.

The product of its digits is 2268000, while the sum is 51.

The square root of 55786569 is about 7469.0407014556. The cubic root of 55786569 is about 382.0995715510.

The spelling of 55786569 in words is "fifty-five million, seven hundred eighty-six thousand, five hundred sixty-nine".