5517988 has 36 divisors (see below), whose sum is σ = 11491200. Its totient is φ = 2310672.

The previous prime is 5517977. The next prime is 5517991. The reversal of 5517988 is 8897155.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8913 + ... + 9511.

It is an arithmetic number, because the mean of its divisors is an integer number (319200).

Almost surely, 2^5517988 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 5517988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5745600).

5517988 is an abundant number, since it is smaller than the sum of its proper divisors (5973212).

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

5517988 is a wasteful number, since it uses less digits than its factorization.

5517988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 655 counting only the distinct ones).

The product of its digits is 100800, while the sum is 43.

The square root of 5517988 is about 2349.0398038347. The cubic root of 5517988 is about 176.7096434347.

The spelling of 5517988 in words is "five million, five hundred seventeen thousand, nine hundred eighty-eight".