55808250 has 32 divisors (see below), whose sum is σ = 139299264. Its totient is φ = 14882000.

The previous prime is 55808239. The next prime is 55808303. The reversal of 55808250 is 5280855.

It is a super-2 number, since 2×55808250² = 6229121536125000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36456 + ... + 37955.

It is an arithmetic number, because the mean of its divisors is an integer number (4353102).

Almost surely, 2^55808250 is an apocalyptic number.

55808250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55808250 is an abundant number, since it is smaller than the sum of its proper divisors (83491014).

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

55808250 is a wasteful number, since it uses less digits than its factorization.

55808250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74431 (or 74421 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 33.

The square root of 55808250 is about 7470.4919516723. The cubic root of 55808250 is about 382.1490651117.

The spelling of 55808250 in words is "fifty-five million, eight hundred eight thousand, two hundred fifty".