506533817 has 4 divisors (see below), whose sum is σ = 506701200. Its totient is φ = 506366436.

The previous prime is 506533801. The next prime is 506533823. The reversal of 506533817 is 718335605.

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 a cyclic number.

It is not a de Polignac number, because 506533817 - 2⁴ = 506533801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506533877) 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, 79067 + ... + 85232.

It is an arithmetic number, because the mean of its divisors is an integer number (126675300).

Almost surely, 2^506533817 is an apocalyptic number.

It is an amenable number.

506533817 is a deficient number, since it is larger than the sum of its proper divisors (167383).

506533817 is a wasteful number, since it uses less digits than its factorization.

506533817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167382.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 506533817 is about 22506.3061607186. The cubic root of 506533817 is about 797.1428376143.

The spelling of 506533817 in words is "five hundred six million, five hundred thirty-three thousand, eight hundred seventeen".