5251830440 has 16 divisors (see below), whose sum is σ = 11816618580. Its totient is φ = 2100732160.

The previous prime is 5251830439. The next prime is 5251830449. The reversal of 5251830440 is 440381525.

It can be written as a sum of positive squares in 2 ways, for example, as 4873994596 + 377835844 = 69814^2 + 19438^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5251830397 and 5251830406.

It is not an unprimeable number, because it can be changed into a prime (5251830449) 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, 65647841 + ... + 65647920.

Almost surely, 2^5251830440 is an apocalyptic number.

It is an amenable number.

5251830440 is an abundant number, since it is smaller than the sum of its proper divisors (6564788140).

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

5251830440 is a wasteful number, since it uses less digits than its factorization.

5251830440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131295772 (or 131295768 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 5251830440 is about 72469.5138661769. The cubic root of 5251830440 is about 1738.2152881225.

The spelling of 5251830440 in words is "five billion, two hundred fifty-one million, eight hundred thirty thousand, four hundred forty".