506381423 has 4 divisors (see below), whose sum is σ = 512482488. Its totient is φ = 500280360.

The previous prime is 506381401. The next prime is 506381437. The reversal of 506381423 is 324183605.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 506381423 - 2⁸ = 506381167 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 506381423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506381723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3050408 + ... + 3050573.

It is an arithmetic number, because the mean of its divisors is an integer number (128120622).

Almost surely, 2^506381423 is an apocalyptic number.

506381423 is a deficient number, since it is larger than the sum of its proper divisors (6101065).

506381423 is an equidigital number, since it uses as much as digits as its factorization.

506381423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101064.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 506381423 is about 22502.9203215938. The cubic root of 506381423 is about 797.0628877234.

The spelling of 506381423 in words is "five hundred six million, three hundred eighty-one thousand, four hundred twenty-three".