5518420 has 12 divisors (see below), whose sum is σ = 11588724. Its totient is φ = 2207360.

The previous prime is 5518399. The next prime is 5518423. The reversal of 5518420 is 248155.

5518420 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 2 ways, for example, as 2815684 + 2702736 = 1678^2 + 1644^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5518423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137941 + ... + 137980.

It is an arithmetic number, because the mean of its divisors is an integer number (965727).

Almost surely, 2^5518420 is an apocalyptic number.

It is an amenable number.

5518420 is an abundant number, since it is smaller than the sum of its proper divisors (6070304).

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

5518420 is a wasteful number, since it uses less digits than its factorization.

5518420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275930 (or 275928 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 5518420 is about 2349.1317544999. The cubic root of 5518420 is about 176.7142548120.

It can be divided in two parts, 5 and 518420, that multiplied together give a square (2592100 = 1610²).

The spelling of 5518420 in words is "five million, five hundred eighteen thousand, four hundred twenty".