5591538 has 32 divisors (see below), whose sum is σ = 13158720. Its totient is φ = 1753920.

The previous prime is 5591513. The next prime is 5591557. The reversal of 5591538 is 8351955.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2128 + ... + 3963.

It is an arithmetic number, because the mean of its divisors is an integer number (411210).

Almost surely, 2^5591538 is an apocalyptic number.

5591538 is an abundant number, since it is smaller than the sum of its proper divisors (7567182).

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

5591538 is a wasteful number, since it uses less digits than its factorization.

5591538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119 (or 6113 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 5591538 is about 2364.6433134830. The cubic root of 5591538 is about 177.4913094998.

The spelling of 5591538 in words is "five million, five hundred ninety-one thousand, five hundred thirty-eight".