5591556 has 36 divisors (see below), whose sum is σ = 14257152. Its totient is φ = 1847664.

The previous prime is 5591513. The next prime is 5591557. The reversal of 5591556 is 6551955.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×5591556² = 62530997002272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 5591556.

It is not an unprimeable number, because it can be changed into a prime (5591557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3961 + ... + 5183.

It is an arithmetic number, because the mean of its divisors is an integer number (396032).

Almost surely, 2^5591556 is an apocalyptic number.

It is an amenable number.

5591556 is an abundant number, since it is smaller than the sum of its proper divisors (8665596).

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

5591556 is a wasteful number, since it uses less digits than its factorization.

5591556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360 (or 1355 counting only the distinct ones).

The product of its digits is 33750, while the sum is 36.

The square root of 5591556 is about 2364.6471195508. The cubic root of 5591556 is about 177.4914999566.

The spelling of 5591556 in words is "five million, five hundred ninety-one thousand, five hundred fifty-six".