513755252 has 6 divisors (see below), whose sum is σ = 899071698. Its totient is φ = 256877624.

The previous prime is 513755251. The next prime is 513755267. The reversal of 513755252 is 252557315.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 512841316 + 913936 = 22646^2 + 956^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513755251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64219403 + ... + 64219410.

It is an arithmetic number, because the mean of its divisors is an integer number (149845283).

Almost surely, 2^513755252 is an apocalyptic number.

It is an amenable number.

513755252 is a deficient number, since it is larger than the sum of its proper divisors (385316446).

513755252 is a wasteful number, since it uses less digits than its factorization.

513755252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128438817 (or 128438815 counting only the distinct ones).

The product of its digits is 52500, while the sum is 35.

The square root of 513755252 is about 22666.1697690633. The cubic root of 513755252 is about 800.9131510474.

The spelling of 513755252 in words is "five hundred thirteen million, seven hundred fifty-five thousand, two hundred fifty-two".