55515066 has 16 divisors (see below), whose sum is σ = 113738688. Its totient is φ = 18053600.

The previous prime is 55515041. The next prime is 55515067. The reversal of 55515066 is 66051555.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 112590 + ... + 113081.

It is an arithmetic number, because the mean of its divisors is an integer number (7108668).

Almost surely, 2^55515066 is an apocalyptic number.

55515066 is an abundant number, since it is smaller than the sum of its proper divisors (58223622).

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

55515066 is a wasteful number, since it uses less digits than its factorization.

55515066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225717.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 55515066 is about 7450.8433079753. The cubic root of 55515066 is about 381.4786937137.

The spelling of 55515066 in words is "fifty-five million, five hundred fifteen thousand, sixty-six".