55888990 has 16 divisors (see below), whose sum is σ = 100686240. Its totient is φ = 22336480.

The previous prime is 55888957. The next prime is 55889021. The reversal of 55888990 is 9988855.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19020 + ... + 21760.

It is an arithmetic number, because the mean of its divisors is an integer number (6292890).

Almost surely, 2^55888990 is an apocalyptic number.

55888990 is a deficient number, since it is larger than the sum of its proper divisors (44797250).

55888990 is a wasteful number, since it uses less digits than its factorization.

55888990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4787.

The product of its (nonzero) digits is 1036800, while the sum is 52.

The square root of 55888990 is about 7475.8939264813. The cubic root of 55888990 is about 382.3332663597. Note that the first 3 decimals are identical.

The spelling of 55888990 in words is "fifty-five million, eight hundred eighty-eight thousand, nine hundred ninety".