505010731 has 4 divisors (see below), whose sum is σ = 507832200. Its totient is φ = 502189264.

The previous prime is 505010719. The next prime is 505010749. The reversal of 505010731 is 137010505.

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 505010731 - 2⁵ = 505010699 is a prime.

It is a super-2 number, since 2×505010731² = 510071676850308722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505017731) 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, 1410466 + ... + 1410823.

It is an arithmetic number, because the mean of its divisors is an integer number (126958050).

Almost surely, 2^505010731 is an apocalyptic number.

505010731 is a deficient number, since it is larger than the sum of its proper divisors (2821469).

505010731 is a wasteful number, since it uses less digits than its factorization.

505010731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821468.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 505010731 is about 22472.4438145921. The cubic root of 505010731 is about 796.3430647310.

The spelling of 505010731 in words is "five hundred five million, ten thousand, seven hundred thirty-one".