506121617 has 4 divisors (see below), whose sum is σ = 508003380. Its totient is φ = 504239856.

The previous prime is 506121613. The next prime is 506121619. The reversal of 506121617 is 716121605.

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 25240576 + 480881041 = 5024^2 + 21929^2 .

It is a cyclic number.

It is not a de Polignac number, because 506121617 - 2² = 506121613 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 506121617.

It is not an unprimeable number, because it can be changed into a prime (506121613) 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, 940478 + ... + 941015.

It is an arithmetic number, because the mean of its divisors is an integer number (127000845).

Almost surely, 2^506121617 is an apocalyptic number.

It is an amenable number.

506121617 is a deficient number, since it is larger than the sum of its proper divisors (1881763).

506121617 is a wasteful number, since it uses less digits than its factorization.

506121617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881762.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 506121617 is about 22497.1468635469. The cubic root of 506121617 is about 796.9265496874.

The spelling of 506121617 in words is "five hundred six million, one hundred twenty-one thousand, six hundred seventeen".