55158822 has 24 divisors (see below), whose sum is σ = 121297176. Its totient is φ = 18111456.

The previous prime is 55158811. The next prime is 55158839. The reversal of 55158822 is 22885155.

55158822 is a `hidden beast` number, since 5 + 51 + 588 + 22 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21663 + ... + 24074.

It is an arithmetic number, because the mean of its divisors is an integer number (5054049).

Almost surely, 2^55158822 is an apocalyptic number.

55158822 is an abundant number, since it is smaller than the sum of its proper divisors (66138354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55158822 is a wasteful number, since it uses less digits than its factorization.

55158822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45812 (or 45809 counting only the distinct ones).

The product of its digits is 32000, while the sum is 36.

The square root of 55158822 is about 7426.8985451533. The cubic root of 55158822 is about 380.6609503604.

The spelling of 55158822 in words is "fifty-five million, one hundred fifty-eight thousand, eight hundred twenty-two".