506622731 has 4 divisors (see below), whose sum is σ = 511106232. Its totient is φ = 502139232.

The previous prime is 506622703. The next prime is 506622737. The reversal of 506622731 is 137226605.

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 506622731 - 2¹⁸ = 506360587 is a prime.

It is a super-2 number, since 2×506622731² = 513333183131796722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (506622737) 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, 2241581 + ... + 2241806.

It is an arithmetic number, because the mean of its divisors is an integer number (127776558).

Almost surely, 2^506622731 is an apocalyptic number.

506622731 is a deficient number, since it is larger than the sum of its proper divisors (4483501).

506622731 is a wasteful number, since it uses less digits than its factorization.

506622731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483500.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 506622731 is about 22508.2813870806. The cubic root of 506622731 is about 797.1894768246.

The spelling of 506622731 in words is "five hundred six million, six hundred twenty-two thousand, seven hundred thirty-one".