5251012440 has 64 divisors (see below), whose sum is σ = 15988181760. Its totient is φ = 1379368320.

The previous prime is 5251012433. The next prime is 5251012441. The reversal of 5251012440 is 442101525.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 5251012440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251012441) 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 15 ways as a sum of consecutive naturals, for example, 318516 + ... + 334595.

It is an arithmetic number, because the mean of its divisors is an integer number (249815340).

Almost surely, 2^5251012440 is an apocalyptic number.

It is an amenable number.

5251012440 is an abundant number, since it is smaller than the sum of its proper divisors (10737169320).

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

5251012440 is a wasteful number, since it uses less digits than its factorization.

5251012440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653192 (or 653188 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 5251012440 is about 72463.8698938995. The cubic root of 5251012440 is about 1738.1250380691.

Adding to 5251012440 its reverse (442101525), we get a palindrome (5693113965).

The spelling of 5251012440 in words is "five billion, two hundred fifty-one million, twelve thousand, four hundred forty".