506121613 has 2 divisors, whose sum is σ = 506121614. Its totient is φ = 506121612.

The previous prime is 506121599. The next prime is 506121619. The reversal of 506121613 is 316121605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 493639524 + 12482089 = 22218^2 + 3533^2 .

It is a cyclic number.

It is not a de Polignac number, because 506121613 - 2²⁵ = 472567181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506121619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253060806 + 253060807.

It is an arithmetic number, because the mean of its divisors is an integer number (253060807).

Almost surely, 2^506121613 is an apocalyptic number.

It is an amenable number.

506121613 is a deficient number, since it is larger than the sum of its proper divisors (1).

506121613 is an equidigital number, since it uses as much as digits as its factorization.

506121613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 506121613 is about 22497.1467746468. The cubic root of 506121613 is about 796.9265475879.

It can be divided in two parts, 50612 and 1613, that added together give a palindrome (52225).

The spelling of 506121613 in words is "five hundred six million, one hundred twenty-one thousand, six hundred thirteen".