504731 has 4 divisors (see below), whose sum is σ = 511200. Its totient is φ = 498264.

The previous prime is 504727. The next prime is 504767. The reversal of 504731 is 137405.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137405 = 5 ⋅27481.

It is a cyclic number.

It is not a de Polignac number, because 504731 - 2² = 504727 is a prime.

It is a super-2 number, since 2×504731² = 509506764722, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 504731.

It is not an unprimeable number, because it can be changed into a prime (504631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3116 + ... + 3273.

It is an arithmetic number, because the mean of its divisors is an integer number (127800).

2⁵⁰⁴⁷³¹ is an apocalyptic number.

504731 is a deficient number, since it is larger than the sum of its proper divisors (6469).

504731 is an equidigital number, since it uses as much as digits as its factorization.

504731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6468.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 504731 is about 710.4442272269. Note that the first 3 decimals coincide. The cubic root of 504731 is about 79.6196003180.

The spelling of 504731 in words is "five hundred four thousand, seven hundred thirty-one".