5518557 has 32 divisors (see below), whose sum is σ = 9452160. Its totient is φ = 3144960.

The previous prime is 5518553. The next prime is 5518567. The reversal of 5518557 is 7558155.

It is not a de Polignac number, because 5518557 - 2² = 5518553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5518553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4503 + ... + 5595.

It is an arithmetic number, because the mean of its divisors is an integer number (295380).

Almost surely, 2^5518557 is an apocalyptic number.

It is an amenable number.

5518557 is a deficient number, since it is larger than the sum of its proper divisors (3933603).

5518557 is a wasteful number, since it uses less digits than its factorization.

5518557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 1124 counting only the distinct ones).

The product of its digits is 35000, while the sum is 36.

The square root of 5518557 is about 2349.1609140287. The cubic root of 5518557 is about 176.7157171661.

The spelling of 5518557 in words is "five million, five hundred eighteen thousand, five hundred fifty-seven".