506199381 has 4 divisors (see below), whose sum is σ = 674932512. Its totient is φ = 337466252.

The previous prime is 506199367. The next prime is 506199391. The reversal of 506199381 is 183991605.

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 506199381 - 2¹⁷ = 506068309 is a prime.

It is a super-2 number, since 2×506199381² = 512475626649566322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506199391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84366561 + ... + 84366566.

It is an arithmetic number, because the mean of its divisors is an integer number (168733128).

Almost surely, 2^506199381 is an apocalyptic number.

It is an amenable number.

506199381 is a deficient number, since it is larger than the sum of its proper divisors (168733131).

506199381 is a wasteful number, since it uses less digits than its factorization.

506199381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168733130.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 506199381 is about 22498.8751052136. The cubic root of 506199381 is about 796.9673626860.

The spelling of 506199381 in words is "five hundred six million, one hundred ninety-nine thousand, three hundred eighty-one".