55055250 has 48 divisors (see below), whose sum is σ = 148875480. Its totient is φ = 14680800.

The previous prime is 55055243. The next prime is 55055263. The reversal of 55055250 is 5255055.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7403841 + 47651409 = 2721^2 + 6903^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9985 + ... + 14484.

Almost surely, 2^55055250 is an apocalyptic number.

55055250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55055250 is an abundant number, since it is smaller than the sum of its proper divisors (93820230).

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

55055250 is a wasteful number, since it uses less digits than its factorization.

55055250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24492 (or 24479 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 27.

The square root of 55055250 is about 7419.9225063339. The cubic root of 55055250 is about 380.4225447468.

The spelling of 55055250 in words is "fifty-five million, fifty-five thousand, two hundred fifty".