505600731 has 16 divisors (see below), whose sum is σ = 773201920. Its totient is φ = 326193480.

The previous prime is 505600729. The next prime is 505600783. The reversal of 505600731 is 137006505.

505600731 is a `hidden beast` number, since 50 + 5 + 600 + 7 + 3 + 1 = 666.

It is not a de Polignac number, because 505600731 - 2¹ = 505600729 is a prime.

It is a super-2 number, since 2×505600731² = 511264198375468722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505600695 and 505600704.

It is not an unprimeable number, because it can be changed into a prime (505600031) 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 15 ways as a sum of consecutive naturals, for example, 301195 + ... + 302868.

It is an arithmetic number, because the mean of its divisors is an integer number (48325120).

Almost surely, 2^505600731 is an apocalyptic number.

505600731 is a deficient number, since it is larger than the sum of its proper divisors (267601189).

505600731 is a wasteful number, since it uses less digits than its factorization.

505600731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604103 (or 604097 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 505600731 is about 22485.5671709655. The cubic root of 505600731 is about 796.6530644511.

The spelling of 505600731 in words is "five hundred five million, six hundred thousand, seven hundred thirty-one".