55777365 has 48 divisors (see below), whose sum is σ = 111541248. Its totient is φ = 25256448.

The previous prime is 55777349. The next prime is 55777367. The reversal of 55777365 is 56377755.

55777365 is a `hidden beast` number, since 5 + 577 + 73 + 6 + 5 = 666.

It is not a de Polignac number, because 55777365 - 2⁴ = 55777349 is a prime.

It is a super-2 number, since 2×55777365² = 6222228892686450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55777365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55777367) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34812 + ... + 36378.

It is an arithmetic number, because the mean of its divisors is an integer number (2323776).

Almost surely, 2^55777365 is an apocalyptic number.

It is an amenable number.

55777365 is a deficient number, since it is larger than the sum of its proper divisors (55763883).

55777365 is a wasteful number, since it uses less digits than its factorization.

55777365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698 (or 1695 counting only the distinct ones).

The product of its digits is 771750, while the sum is 45.

The square root of 55777365 is about 7468.4245326575. The cubic root of 55777365 is about 382.0785567084.

The spelling of 55777365 in words is "fifty-five million, seven hundred seventy-seven thousand, three hundred sixty-five".