5515312520 has 32 divisors (see below), whose sum is σ = 12457762200. Its totient is φ = 2197536768.

The previous prime is 5515312519. The next prime is 5515312529. The reversal of 5515312520 is 252135155.

It can be written as a sum of positive squares in 4 ways, for example, as 4464645124 + 1050667396 = 66818^2 + 32414^2 .

It is not an unprimeable number, because it can be changed into a prime (5515312529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257975 + ... + 278534.

Almost surely, 2^5515312520 is an apocalyptic number.

It is an amenable number.

5515312520 is an abundant number, since it is smaller than the sum of its proper divisors (6942449680).

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

5515312520 is a wasteful number, since it uses less digits than its factorization.

5515312520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536777 (or 536773 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 5515312520 is about 74265.1501042043. The cubic root of 5515312520 is about 1766.8107870244.

Adding to 5515312520 its reverse (252135155), we get a palindrome (5767447675).

The spelling of 5515312520 in words is "five billion, five hundred fifteen million, three hundred twelve thousand, five hundred twenty".