55116660 has 48 divisors (see below), whose sum is σ = 155143296. Its totient is φ = 14620032.

The previous prime is 55116653. The next prime is 55116673. The reversal of 55116660 is 6661155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 9489 + ... + 14151.

It is an arithmetic number, because the mean of its divisors is an integer number (3232152).

Almost surely, 2^55116660 is an apocalyptic number.

It is an amenable number.

55116660 is an abundant number, since it is smaller than the sum of its proper divisors (100026636).

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

55116660 is a wasteful number, since it uses less digits than its factorization.

55116660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872 (or 4870 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 55116660 is about 7424.0595363992. The cubic root of 55116660 is about 380.5639364564.

The spelling of 55116660 in words is "fifty-five million, one hundred sixteen thousand, six hundred sixty".