55990008 has 32 divisors (see below), whose sum is σ = 155528400. Its totient is φ = 18663264.

The previous prime is 55990003. The next prime is 55990013. The reversal of 55990008 is 80009955.

It is an interprime number because it is at equal distance from previous prime (55990003) and next prime (55990013).

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 (55990003) 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, 129391 + ... + 129822.

Almost surely, 2^55990008 is an apocalyptic number.

It is an amenable number.

55990008 is an abundant number, since it is smaller than the sum of its proper divisors (99538392).

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

55990008 is a wasteful number, since it uses less digits than its factorization.

55990008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259228 (or 259218 counting only the distinct ones).

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

The square root of 55990008 is about 7482.6471251824. The cubic root of 55990008 is about 382.5634804291.

The spelling of 55990008 in words is "fifty-five million, nine hundred ninety thousand, eight".