55929990 has 32 divisors (see below), whose sum is σ = 134428896. Its totient is φ = 14892800.

The previous prime is 55929967. The next prime is 55930001. The reversal of 55929990 is 9992955.

55929990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38314 + ... + 39746.

It is an arithmetic number, because the mean of its divisors is an integer number (4200903).

Almost surely, 2^55929990 is an apocalyptic number.

55929990 is an abundant number, since it is smaller than the sum of its proper divisors (78498906).

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

55929990 is a wasteful number, since it uses less digits than its factorization.

55929990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744.

The product of its (nonzero) digits is 328050, while the sum is 48.

The square root of 55929990 is about 7478.6355707442. The cubic root of 55929990 is about 382.4267363632.

The spelling of 55929990 in words is "fifty-five million, nine hundred twenty-nine thousand, nine hundred ninety".