55774755 has 48 divisors (see below), whose sum is σ = 99459360. Its totient is φ = 28905984.

The previous prime is 55774751. The next prime is 55774757. The reversal of 55774755 is 55747755.

It is a happy number.

55774755 is a `hidden beast` number, since 5 + 577 + 4 + 75 + 5 = 666.

It is not a de Polignac number, because 55774755 - 2² = 55774751 is a prime.

It is a super-2 number, since 2×55774755² = 6221646590620050, 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 55774755.

It is not an unprimeable number, because it can be changed into a prime (55774751) 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, 407047 + ... + 407183.

It is an arithmetic number, because the mean of its divisors is an integer number (2072070).

Almost surely, 2^55774755 is an apocalyptic number.

55774755 is a deficient number, since it is larger than the sum of its proper divisors (43684605).

55774755 is a wasteful number, since it uses less digits than its factorization.

55774755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 337 counting only the distinct ones).

The product of its digits is 857500, while the sum is 45.

The square root of 55774755 is about 7468.2497949654. The cubic root of 55774755 is about 382.0725970592.

Subtracting from 55774755 its reverse (55747755), we obtain a cube (27000 = 30³).

The spelling of 55774755 in words is "fifty-five million, seven hundred seventy-four thousand, seven hundred fifty-five".