55016660 has 24 divisors (see below), whose sum is σ = 116599560. Its totient is φ = 21803904.

The previous prime is 55016653. The next prime is 55016671. The reversal of 55016660 is 6661055.

It can be written as a sum of positive squares in 4 ways, for example, as 15904144 + 39112516 = 3988^2 + 6254^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10439 + ... + 14798.

It is an arithmetic number, because the mean of its divisors is an integer number (4858315).

Almost surely, 2^55016660 is an apocalyptic number.

It is an amenable number.

55016660 is an abundant number, since it is smaller than the sum of its proper divisors (61582900).

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

55016660 is a wasteful number, since it uses less digits than its factorization.

55016660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25355 (or 25353 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 55016660 is about 7417.3216190212. The cubic root of 55016660 is about 380.3336404955. Note that the first 3 decimals are identical.

The spelling of 55016660 in words is "fifty-five million, sixteen thousand, six hundred sixty".