55990606 has 16 divisors (see below), whose sum is σ = 101036160. Its totient is φ = 22732920.

The previous prime is 55990603. The next prime is 55990607. The reversal of 55990606 is 60609955.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55990603) 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, 104980 + ... + 105511.

It is an arithmetic number, because the mean of its divisors is an integer number (6314760).

Almost surely, 2^55990606 is an apocalyptic number.

55990606 is a deficient number, since it is larger than the sum of its proper divisors (45045554).

55990606 is a wasteful number, since it uses less digits than its factorization.

55990606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210519.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 55990606 is about 7482.6870841964. The cubic root of 55990606 is about 382.5648424111.

The spelling of 55990606 in words is "fifty-five million, nine hundred ninety thousand, six hundred six".