5515042440 has 32 divisors (see below), whose sum is σ = 16545127680. Its totient is φ = 1470677952.

The previous prime is 5515042439. The next prime is 5515042451. The reversal of 5515042440 is 442405155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 5515042398 and 5515042407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22979224 + ... + 22979463.

It is an arithmetic number, because the mean of its divisors is an integer number (517035240).

Almost surely, 2^5515042440 is an apocalyptic number.

It is an amenable number.

5515042440 is an abundant number, since it is smaller than the sum of its proper divisors (11030085240).

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

5515042440 is a wasteful number, since it uses less digits than its factorization.

5515042440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45958701 (or 45958697 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 5515042440 is about 74263.3317324236. The cubic root of 5515042440 is about 1766.7819468305.

Adding to 5515042440 its reverse (442405155), we get a palindrome (5957447595).

The spelling of 5515042440 in words is "five billion, five hundred fifteen million, forty-two thousand, four hundred forty".