513411215252 has 36 divisors (see below), whose sum is σ = 1021188400596. Its totient is φ = 224487486720.

The previous prime is 513411215243. The next prime is 513411215279. The reversal of 513411215252 is 252512114315.

It can be written as a sum of positive squares in 2 ways, for example, as 241713822736 + 271697392516 = 491644^2 + 521246^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13656149 + ... + 13693692.

It is an arithmetic number, because the mean of its divisors is an integer number (28366344461).

Almost surely, 2^513411215252 is an apocalyptic number.

513411215252 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

513411215252 is a deficient number, since it is larger than the sum of its proper divisors (507777185344).

513411215252 is a wasteful number, since it uses less digits than its factorization.

513411215252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27349896 (or 27349875 counting only the distinct ones).

The product of its digits is 12000, while the sum is 32.

Adding to 513411215252 its reverse (252512114315), we get a palindrome (765923329567).

The spelling of 513411215252 in words is "five hundred thirteen billion, four hundred eleven million, two hundred fifteen thousand, two hundred fifty-two".