506165313 has 4 divisors (see below), whose sum is σ = 674887088. Its totient is φ = 337443540.

The previous prime is 506165279. The next prime is 506165321. The reversal of 506165313 is 313561605.

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.

It is not a de Polignac number, because 506165313 - 2⁹ = 506164801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506165323) 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, 84360883 + ... + 84360888.

It is an arithmetic number, because the mean of its divisors is an integer number (168721772).

Almost surely, 2^506165313 is an apocalyptic number.

It is an amenable number.

506165313 is a deficient number, since it is larger than the sum of its proper divisors (168721775).

506165313 is a wasteful number, since it uses less digits than its factorization.

506165313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168721774.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 506165313 is about 22498.1179879562. The cubic root of 506165313 is about 796.9494832401.

The spelling of 506165313 in words is "five hundred six million, one hundred sixty-five thousand, three hundred thirteen".