55510290 has 96 divisors (see below), whose sum is σ = 160932096. Its totient is φ = 13159680.

The previous prime is 55510289. The next prime is 55510313. The reversal of 55510290 is 9201555.

55510290 is a `hidden beast` number, since 555 + 102 + 9 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45934 + ... + 47126.

It is an arithmetic number, because the mean of its divisors is an integer number (1676376).

Almost surely, 2^55510290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55510290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80466048).

55510290 is an abundant number, since it is smaller than the sum of its proper divisors (105421806).

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

55510290 is a wasteful number, since it uses less digits than its factorization.

55510290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 55510290 is about 7450.5228004483. The cubic root of 55510290 is about 381.4677537736.

The spelling of 55510290 in words is "fifty-five million, five hundred ten thousand, two hundred ninety".