55637808 has 80 divisors (see below), whose sum is σ = 149990400. Its totient is φ = 17752320.

The previous prime is 55637807. The next prime is 55637809. The reversal of 55637808 is 80873655.

55637808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55637807) and next prime (55637809).

It is a self number, because there is not a number n which added to its sum of digits gives 55637808.

It is not an unprimeable number, because it can be changed into a prime (55637807) by changing a digit.

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, 206698 + ... + 206966.

It is an arithmetic number, because the mean of its divisors is an integer number (1874880).

Almost surely, 2^55637808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55637808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74995200).

55637808 is an abundant number, since it is smaller than the sum of its proper divisors (94352592).

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

55637808 is a wasteful number, since it uses less digits than its factorization.

55637808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 55637808 is about 7459.0755459373. The cubic root of 55637808 is about 381.7596324158.

The spelling of 55637808 in words is "fifty-five million, six hundred thirty-seven thousand, eight hundred eight".