5251121724 has 24 divisors (see below), whose sum is σ = 12278867328. Its totient is φ = 1746623920.

The previous prime is 5251121723. The next prime is 5251121737. The reversal of 5251121724 is 4271211525.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 5251121691 and 5251121700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251121723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462912 + ... + 474119.

It is an arithmetic number, because the mean of its divisors is an integer number (511619472).

Almost surely, 2^5251121724 is an apocalyptic number.

It is an amenable number.

5251121724 is an abundant number, since it is smaller than the sum of its proper divisors (7027745604).

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

5251121724 is a wasteful number, since it uses less digits than its factorization.

5251121724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937505 (or 937503 counting only the distinct ones).

The product of its digits is 5600, while the sum is 30.

The square root of 5251121724 is about 72464.6239485171. The cubic root of 5251121724 is about 1738.1370959304.

The spelling of 5251121724 in words is "five billion, two hundred fifty-one million, one hundred twenty-one thousand, seven hundred twenty-four".