520022731 has 2 divisors, whose sum is σ = 520022732. Its totient is φ = 520022730.

The previous prime is 520022689. The next prime is 520022747. The reversal of 520022731 is 137220025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520022731 - 2²⁷ = 385805003 is a prime.

It is a super-2 number, since 2×520022731² = 540847281513396722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520022771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260011365 + 260011366.

It is an arithmetic number, because the mean of its divisors is an integer number (260011366).

Almost surely, 2^520022731 is an apocalyptic number.

520022731 is a deficient number, since it is larger than the sum of its proper divisors (1).

520022731 is an equidigital number, since it uses as much as digits as its factorization.

520022731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 520022731 is about 22804.0069066820. The cubic root of 520022731 is about 804.1568688698.

Adding to 520022731 its reverse (137220025), we get a palindrome (657242756).

The spelling of 520022731 in words is "five hundred twenty million, twenty-two thousand, seven hundred thirty-one".