513125252 has 6 divisors (see below), whose sum is σ = 897969198. Its totient is φ = 256562624.

The previous prime is 513125251. The next prime is 513125257. The reversal of 513125252 is 252521315.

It can be written as a sum of positive squares in only one way, i.e., 410224516 + 102900736 = 20254^2 + 10144^2 .

It is not an unprimeable number, because it can be changed into a prime (513125251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64140653 + ... + 64140660.

It is an arithmetic number, because the mean of its divisors is an integer number (149661533).

Almost surely, 2^513125252 is an apocalyptic number.

It is an amenable number.

513125252 is a deficient number, since it is larger than the sum of its proper divisors (384843946).

513125252 is a wasteful number, since it uses less digits than its factorization.

513125252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128281317 (or 128281315 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 513125252 is about 22652.2681425062. The cubic root of 513125252 is about 800.5856399277.

Adding to 513125252 its reverse (252521315), we get a palindrome (765646567).

The spelling of 513125252 in words is "five hundred thirteen million, one hundred twenty-five thousand, two hundred fifty-two".