515425013 has 4 divisors (see below), whose sum is σ = 517563948. Its totient is φ = 513286080.

The previous prime is 515425007. The next prime is 515425019. The reversal of 515425013 is 310524515.

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

It is an interprime number because it is at equal distance from previous prime (515425007) and next prime (515425019).

It can be written as a sum of positive squares in 2 ways, for example, as 216031204 + 299393809 = 14698^2 + 17303^2 .

It is a cyclic number.

It is not a de Polignac number, because 515425013 - 2²⁸ = 246989557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515425019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069106 + ... + 1069587.

It is an arithmetic number, because the mean of its divisors is an integer number (129390987).

Almost surely, 2^515425013 is an apocalyptic number.

It is an amenable number.

515425013 is a deficient number, since it is larger than the sum of its proper divisors (2138935).

515425013 is a wasteful number, since it uses less digits than its factorization.

515425013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138934.

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

The square root of 515425013 is about 22702.9736598535. The cubic root of 515425013 is about 801.7798979547.

Adding to 515425013 its reverse (310524515), we get a palindrome (825949528).

The spelling of 515425013 in words is "five hundred fifteen million, four hundred twenty-five thousand, thirteen".