5540418 has 24 divisors (see below), whose sum is σ = 12928188. Its totient is φ = 1704672.

The previous prime is 5540411. The next prime is 5540441. The reversal of 5540418 is 8140455.

It can be written as a sum of positive squares in 2 ways, for example, as 5212089 + 328329 = 2283^2 + 573^2 .

It is a super-2 number, since 2×5540418² = 61392463229448, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5540391 and 5540400.

It is not an unprimeable number, because it can be changed into a prime (5540411) 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, 11605 + ... + 12072.

Almost surely, 2^5540418 is an apocalyptic number.

5540418 is an abundant number, since it is smaller than the sum of its proper divisors (7387770).

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

5540418 is a wasteful number, since it uses less digits than its factorization.

5540418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23698 (or 23695 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 5540418 is about 2353.8092531044. The cubic root of 5540418 is about 176.9487546755.

The spelling of 5540418 in words is "five million, five hundred forty thousand, four hundred eighteen".