515130529 has 4 divisors (see below), whose sum is σ = 516990484. Its totient is φ = 513270576.

The previous prime is 515130493. The next prime is 515130533. The reversal of 515130529 is 925031515.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 284698129 + 230432400 = 16873^2 + 15180^2 .

It is a cyclic number.

It is not a de Polignac number, because 515130529 - 2⁹ = 515130017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 515130529.

It is not an unprimeable number, because it can be changed into a prime (515130599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929562 + ... + 930115.

It is an arithmetic number, because the mean of its divisors is an integer number (129247621).

Almost surely, 2^515130529 is an apocalyptic number.

It is an amenable number.

515130529 is a deficient number, since it is larger than the sum of its proper divisors (1859955).

515130529 is a wasteful number, since it uses less digits than its factorization.

515130529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859954.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 515130529 is about 22696.4871510990. The cubic root of 515130529 is about 801.6271719994.

It can be divided in two parts, 515 and 130529, that added together give a square (131044 = 362²).

The spelling of 515130529 in words is "five hundred fifteen million, one hundred thirty thousand, five hundred twenty-nine".