55515060 has 72 divisors (see below), whose sum is σ = 169434720. Its totient is φ = 14712768.

The previous prime is 55515041. The next prime is 55515067. The reversal of 55515060 is 6051555.

55515060 is a `hidden beast` number, since 5 + 551 + 50 + 60 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55515067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31359 + ... + 33081.

It is an arithmetic number, because the mean of its divisors is an integer number (2353260).

Almost surely, 2^55515060 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 55515060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84717360).

55515060 is an abundant number, since it is smaller than the sum of its proper divisors (113919660).

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

55515060 is a wasteful number, since it uses less digits than its factorization.

55515060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917 (or 1912 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 55515060 is about 7450.8429053363. The cubic root of 55515060 is about 381.4786799704.

The spelling of 55515060 in words is "fifty-five million, five hundred fifteen thousand, sixty".