55011660 has 96 divisors (see below), whose sum is σ = 177956352. Its totient is φ = 12549120.

The previous prime is 55011641. The next prime is 55011661. The reversal of 55011660 is 6611055.

55011660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55011660.

It is not an unprimeable number, because it can be changed into a prime (55011661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8769 + ... + 13671.

It is an arithmetic number, because the mean of its divisors is an integer number (1853712).

Almost surely, 2^55011660 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 55011660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88978176).

55011660 is an abundant number, since it is smaller than the sum of its proper divisors (122944692).

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

55011660 is a wasteful number, since it uses less digits than its factorization.

55011660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943 (or 4941 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 55011660 is about 7416.9845624755. The cubic root of 55011660 is about 380.3221183746.

The spelling of 55011660 in words is "fifty-five million, eleven thousand, six hundred sixty".