55767855 has 32 divisors (see below), whose sum is σ = 104832000. Its totient is φ = 24958080.

The previous prime is 55767799. The next prime is 55767863. The reversal of 55767855 is 55876755.

It is not a de Polignac number, because 55767855 - 2⁷ = 55767727 is a prime.

It is a super-2 number, since 2×55767855² = 6220107302602050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10855 + ... + 15144.

It is an arithmetic number, because the mean of its divisors is an integer number (3276000).

Almost surely, 2^55767855 is an apocalyptic number.

55767855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55767855 is a deficient number, since it is larger than the sum of its proper divisors (49064145).

55767855 is a wasteful number, since it uses less digits than its factorization.

55767855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26031.

The product of its digits is 1470000, while the sum is 48.

The square root of 55767855 is about 7467.7878250523. The cubic root of 55767855 is about 382.0568407692.

Subtracting 55767855 from its reverse (55876755), we obtain a square (108900 = 330²).

It can be divided in two parts, 5576 and 7855, that added together give a palindrome (13431).

The spelling of 55767855 in words is "fifty-five million, seven hundred sixty-seven thousand, eight hundred fifty-five".