5591861 has 12 divisors (see below), whose sum is σ = 6483840. Its totient is φ = 4781760.

The previous prime is 5591837. The next prime is 5591863. The reversal of 5591861 is 1681955.

It is a de Polignac number, because none of the positive numbers 2^k-5591861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5591863) 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, 2300 + ... + 4058.

It is an arithmetic number, because the mean of its divisors is an integer number (540320).

Almost surely, 2^5591861 is an apocalyptic number.

It is an amenable number.

5591861 is a deficient number, since it is larger than the sum of its proper divisors (891979).

5591861 is a wasteful number, since it uses less digits than its factorization.

5591861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804 (or 1787 counting only the distinct ones).

The product of its digits is 10800, while the sum is 35.

The square root of 5591861 is about 2364.7116103238. The cubic root of 5591861 is about 177.4947270800.

The spelling of 5591861 in words is "five million, five hundred ninety-one thousand, eight hundred sixty-one".