513712372 has 6 divisors (see below), whose sum is σ = 898996658. Its totient is φ = 256856184.

The previous prime is 513712363. The next prime is 513712373. The reversal of 513712372 is 273217315.

It can be written as a sum of positive squares in only one way, i.e., 385886736 + 127825636 = 19644^2 + 11306^2 .

It is a super-2 number, since 2×513712372² = 527800802291732768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513712373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64214043 + ... + 64214050.

Almost surely, 2^513712372 is an apocalyptic number.

It is an amenable number.

513712372 is a deficient number, since it is larger than the sum of its proper divisors (385284286).

513712372 is a wasteful number, since it uses less digits than its factorization.

513712372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128428097 (or 128428095 counting only the distinct ones).

The product of its digits is 8820, while the sum is 31.

The square root of 513712372 is about 22665.2238462363. The cubic root of 513712372 is about 800.8908679912.

Adding to 513712372 its reverse (273217315), we get a palindrome (786929687).

The spelling of 513712372 in words is "five hundred thirteen million, seven hundred twelve thousand, three hundred seventy-two".