5312513440 has 48 divisors (see below), whose sum is σ = 13516265448. Its totient is φ = 1961542656.

The previous prime is 5312513429. The next prime is 5312513467. The reversal of 5312513440 is 443152135.

It can be written as a sum of positive squares in 4 ways, for example, as 4408428816 + 904084624 = 66396^2 + 30068^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5312513399 and 5312513408.

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, 1274967 + ... + 1279126.

Almost surely, 2^5312513440 is an apocalyptic number.

It is an amenable number.

5312513440 is an abundant number, since it is smaller than the sum of its proper divisors (8203752008).

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

5312513440 is a wasteful number, since it uses less digits than its factorization.

5312513440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554121 (or 2554113 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 5312513440 is about 72886.9908831473. The cubic root of 5312513440 is about 1744.8844831756.

Adding to 5312513440 its reverse (443152135), we get a palindrome (5755665575).

The spelling of 5312513440 in words is "five billion, three hundred twelve million, five hundred thirteen thousand, four hundred forty".