515241013 has 4 divisors (see below), whose sum is σ = 588846880. Its totient is φ = 441635148.

The previous prime is 515240983. The next prime is 515241029. The reversal of 515241013 is 310142515.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310142515 = 5 ⋅62028503.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515241013 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 (515241913) 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, 36802923 + ... + 36802936.

It is an arithmetic number, because the mean of its divisors is an integer number (147211720).

Almost surely, 2^515241013 is an apocalyptic number.

It is an amenable number.

515241013 is a deficient number, since it is larger than the sum of its proper divisors (73605867).

515241013 is an equidigital number, since it uses as much as digits as its factorization.

515241013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73605866.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 515241013 is about 22698.9209655437. The cubic root of 515241013 is about 801.6844782809.

Adding to 515241013 its reverse (310142515), we get a palindrome (825383528).

The spelling of 515241013 in words is "five hundred fifteen million, two hundred forty-one thousand, thirteen".