55090908 has 24 divisors (see below), whose sum is σ = 142828560. Its totient is φ = 18363600.

The previous prime is 55090907. The next prime is 55090927. The reversal of 55090908 is 80909055.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55090907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254943 + ... + 255158.

It is an arithmetic number, because the mean of its divisors is an integer number (5951190).

Almost surely, 2^55090908 is an apocalyptic number.

It is an amenable number.

55090908 is an abundant number, since it is smaller than the sum of its proper divisors (87737652).

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

55090908 is a wasteful number, since it uses less digits than its factorization.

55090908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510114 (or 510106 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 55090908 is about 7422.3249726753. The cubic root of 55090908 is about 380.5046572886.

The spelling of 55090908 in words is "fifty-five million, ninety thousand, nine hundred eight".