5591540 has 12 divisors (see below), whose sum is σ = 11742276. Its totient is φ = 2236608.

The previous prime is 5591513. The next prime is 5591557. The reversal of 5591540 is 451955.

It can be written as a sum of positive squares in 2 ways, for example, as 1567504 + 4024036 = 1252^2 + 2006^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139769 + ... + 139808.

It is an arithmetic number, because the mean of its divisors is an integer number (978523).

Almost surely, 2^5591540 is an apocalyptic number.

It is an amenable number.

5591540 is an abundant number, since it is smaller than the sum of its proper divisors (6150736).

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

5591540 is a wasteful number, since it uses less digits than its factorization.

5591540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279586 (or 279584 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 5591540 is about 2364.6437363798. The cubic root of 5591540 is about 177.4913306617.

It can be divided in two parts, 55915 and 40, that added together give a palindrome (55955).

The spelling of 5591540 in words is "five million, five hundred ninety-one thousand, five hundred forty".