5251518517 has 8 divisors (see below), whose sum is σ = 6019547456. Its totient is φ = 4487942592.

The previous prime is 5251518469. The next prime is 5251518523. The reversal of 5251518517 is 7158151525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-5251518517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5251518517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251518557) 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, 1110723 + ... + 1115440.

It is an arithmetic number, because the mean of its divisors is an integer number (752443432).

Almost surely, 2^5251518517 is an apocalyptic number.

It is an amenable number.

5251518517 is a deficient number, since it is larger than the sum of its proper divisors (768028939).

5251518517 is a wasteful number, since it uses less digits than its factorization.

5251518517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226507.

The product of its digits is 70000, while the sum is 40.

The square root of 5251518517 is about 72467.3617361637. The cubic root of 5251518517 is about 1738.1808747202.

The spelling of 5251518517 in words is "five billion, two hundred fifty-one million, five hundred eighteen thousand, five hundred seventeen".