5251511213 has 8 divisors (see below), whose sum is σ = 5953130400. Its totient is φ = 4592414448.

The previous prime is 5251511173. The next prime is 5251511249. The reversal of 5251511213 is 3121151525.

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

It is a cyclic number.

It is not a de Polignac number, because 5251511213 - 2¹⁰ = 5251510189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251511273) 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 7 ways as a sum of consecutive naturals, for example, 10630343 + ... + 10630836.

It is an arithmetic number, because the mean of its divisors is an integer number (744141300).

Almost surely, 2^5251511213 is an apocalyptic number.

It is an amenable number.

5251511213 is a deficient number, since it is larger than the sum of its proper divisors (701619187).

5251511213 is a wasteful number, since it uses less digits than its factorization.

5251511213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21261211.

The product of its digits is 1500, while the sum is 26.

The square root of 5251511213 is about 72467.3113410453. The cubic root of 5251511213 is about 1738.1800688784.

Adding to 5251511213 its reverse (3121151525), we get a palindrome (8372662738).

The spelling of 5251511213 in words is "five billion, two hundred fifty-one million, five hundred eleven thousand, two hundred thirteen".