5518791 has 6 divisors (see below), whose sum is σ = 7971600. Its totient is φ = 3679188.

The previous prime is 5518687. The next prime is 5518817. The reversal of 5518791 is 1978155.

It is not a de Polignac number, because 5518791 - 2¹⁰ = 5517767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5508791) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306591 + ... + 306608.

It is an arithmetic number, because the mean of its divisors is an integer number (1328600).

Almost surely, 2^5518791 is an apocalyptic number.

5518791 is a deficient number, since it is larger than the sum of its proper divisors (2452809).

5518791 is a wasteful number, since it uses less digits than its factorization.

5518791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613205 (or 613202 counting only the distinct ones).

The product of its digits is 12600, while the sum is 36.

The square root of 5518791 is about 2349.2107185180. The cubic root of 5518791 is about 176.7182148537.

It can be divided in two parts, 55187 and 91, that added together give a triangular number (55278 = T₃₃₂).

The spelling of 5518791 in words is "five million, five hundred eighteen thousand, seven hundred ninety-one".