55890630 has 24 divisors (see below), whose sum is σ = 145315872. Its totient is φ = 14904144.

The previous prime is 55890607. The next prime is 55890707. The reversal of 55890630 is 3609855.

55890630 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 11 ways as a sum of consecutive naturals, for example, 310414 + ... + 310593.

It is an arithmetic number, because the mean of its divisors is an integer number (6054828).

Almost surely, 2^55890630 is an apocalyptic number.

55890630 is an abundant number, since it is smaller than the sum of its proper divisors (89425242).

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

55890630 is a wasteful number, since it uses less digits than its factorization.

55890630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621020 (or 621017 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 55890630 is about 7476.0036115561. The cubic root of 55890630 is about 382.3370060374.

The spelling of 55890630 in words is "fifty-five million, eight hundred ninety thousand, six hundred thirty".