501365731 has 2 divisors, whose sum is σ = 501365732. Its totient is φ = 501365730.

The previous prime is 501365713. The next prime is 501365789. The reversal of 501365731 is 137563105.

Together with previous prime (501365713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 501365731 - 2¹⁹ = 500841443 is a prime.

It is a super-2 number, since 2×501365731² = 502735192442328722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 501365693 and 501365702.

It is not a weakly prime, because it can be changed into another prime (501365701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250682865 + 250682866.

It is an arithmetic number, because the mean of its divisors is an integer number (250682866).

Almost surely, 2^501365731 is an apocalyptic number.

501365731 is a deficient number, since it is larger than the sum of its proper divisors (1).

501365731 is an equidigital number, since it uses as much as digits as its factorization.

501365731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 501365731 is about 22391.1976231733. The cubic root of 501365731 is about 794.4225232885.

The spelling of 501365731 in words is "five hundred one million, three hundred sixty-five thousand, seven hundred thirty-one".