55158408 has 40 divisors (see below), whose sum is σ = 154496430. Its totient is φ = 18385920.

The previous prime is 55158359. The next prime is 55158413. The reversal of 55158408 is 80485155.

It can be written as a sum of positive squares in only one way, i.e., 35070084 + 20088324 = 5922^2 + 4482^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 9 ways as a sum of consecutive naturals, for example, 41913 + ... + 43208.

Almost surely, 2^55158408 is an apocalyptic number.

It is an amenable number.

55158408 is an abundant number, since it is smaller than the sum of its proper divisors (99338022).

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

55158408 is a wasteful number, since it uses less digits than its factorization.

55158408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85139 (or 85126 counting only the distinct ones).

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

The square root of 55158408 is about 7426.8706734398. The cubic root of 55158408 is about 380.6599979952.

The spelling of 55158408 in words is "fifty-five million, one hundred fifty-eight thousand, four hundred eight".