5511660 has 96 divisors (see below), whose sum is σ = 19256832. Its totient is φ = 1144320.

The previous prime is 5511641. The next prime is 5511683. The reversal of 5511660 is 661155.

It is a self number, because there is not a number n which added to its sum of digits gives 5511660.

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 31 ways as a sum of consecutive naturals, for example, 4024 + ... + 5216.

It is an arithmetic number, because the mean of its divisors is an integer number (200592).

Almost surely, 2^5511660 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 5511660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9628416).

5511660 is an abundant number, since it is smaller than the sum of its proper divisors (13745172).

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

5511660 is a wasteful number, since it uses less digits than its factorization.

5511660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223 (or 1221 counting only the distinct ones).

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

The square root of 5511660 is about 2347.6924841214. The cubic root of 5511660 is about 176.6420676956.

It can be divided in two parts, 551 and 1660, that added together give a triangular number (2211 = T₆₆).

The spelling of 5511660 in words is "five million, five hundred eleven thousand, six hundred sixty".