5215512252 has 12 divisors (see below), whose sum is σ = 12169528616. Its totient is φ = 1738504080.

The previous prime is 5215512227. The next prime is 5215512259. The reversal of 5215512252 is 2522155125.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×5215512252² = 54403136101524223008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5215512259) 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, 217312999 + ... + 217313022.

Almost surely, 2^5215512252 is an apocalyptic number.

It is an amenable number.

5215512252 is an abundant number, since it is smaller than the sum of its proper divisors (6954016364).

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

5215512252 is a wasteful number, since it uses less digits than its factorization.

5215512252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434626028 (or 434626026 counting only the distinct ones).

The product of its digits is 10000, while the sum is 30.

The square root of 5215512252 is about 72218.5035292203. The cubic root of 5215512252 is about 1734.1992337150.

Adding to 5215512252 its reverse (2522155125), we get a palindrome (7737667377).

The spelling of 5215512252 in words is "five billion, two hundred fifteen million, five hundred twelve thousand, two hundred fifty-two".