513796520 has 16 divisors (see below), whose sum is σ = 1156042260. Its totient is φ = 205518592.

The previous prime is 513796513. The next prime is 513796529. The reversal of 513796520 is 25697315.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 512660164 + 1136356 = 22642^2 + 1066^2 .

It is a super-2 number, since 2×513796520² = 527973727928220800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (513796529) 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, 6422417 + ... + 6422496.

Almost surely, 2^513796520 is an apocalyptic number.

It is an amenable number.

513796520 is an abundant number, since it is smaller than the sum of its proper divisors (642245740).

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

513796520 is a wasteful number, since it uses less digits than its factorization.

513796520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12844924 (or 12844920 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 513796520 is about 22667.0800942689. The cubic root of 513796520 is about 800.9345952395.

The spelling of 513796520 in words is "five hundred thirteen million, seven hundred ninety-six thousand, five hundred twenty".