55558250 has 64 divisors (see below), whose sum is σ = 115240320. Its totient is φ = 19888000.

The previous prime is 55558249. The next prime is 55558253. The reversal of 55558250 is 5285555.

It is a happy number.

55558250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55558250.

It is not an unprimeable number, because it can be changed into a prime (55558253) 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 31 ways as a sum of consecutive naturals, for example, 244637 + ... + 244863.

It is an arithmetic number, because the mean of its divisors is an integer number (1800630).

Almost surely, 2^55558250 is an apocalyptic number.

55558250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55558250 is an abundant number, since it is smaller than the sum of its proper divisors (59682070).

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

55558250 is a wasteful number, since it uses less digits than its factorization.

55558250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The square root of 55558250 is about 7453.7406716360. The cubic root of 55558250 is about 381.5775828226.

The spelling of 55558250 in words is "fifty-five million, five hundred fifty-eight thousand, two hundred fifty".