55958855 has 4 divisors (see below), whose sum is σ = 67150632. Its totient is φ = 44767080.

The previous prime is 55958827. The next prime is 55958879. The reversal of 55958855 is 55885955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55885955 = 5 ⋅11177191.

It is not a de Polignac number, because 55958855 - 2⁸ = 55958599 is a prime.

It is a super-2 number, since 2×55958855² = 6262786905822050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5595881 + ... + 5595890.

It is an arithmetic number, because the mean of its divisors is an integer number (16787658).

Almost surely, 2^55958855 is an apocalyptic number.

55958855 is a deficient number, since it is larger than the sum of its proper divisors (11191777).

55958855 is a wasteful number, since it uses less digits than its factorization.

55958855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11191776.

The product of its digits is 1800000, while the sum is 50.

The square root of 55958855 is about 7480.5651524467. The cubic root of 55958855 is about 382.4925141286.

Subtracting from 55958855 its reverse (55885955), we obtain a square (72900 = 270²).

The spelling of 55958855 in words is "fifty-five million, nine hundred fifty-eight thousand, eight hundred fifty-five".