506765531 has 2 divisors, whose sum is σ = 506765532. Its totient is φ = 506765530.

The previous prime is 506765527. The next prime is 506765537. The reversal of 506765531 is 135567605.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 506765531 - 2² = 506765527 is a prime.

It is a super-2 number, since 2×506765531² = 513622606819423922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (506765537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253382765 + 253382766.

It is an arithmetic number, because the mean of its divisors is an integer number (253382766).

Almost surely, 2^506765531 is an apocalyptic number.

506765531 is a deficient number, since it is larger than the sum of its proper divisors (1).

506765531 is an equidigital number, since it uses as much as digits as its factorization.

506765531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 506765531 is about 22511.4533293610. The cubic root of 506765531 is about 797.2643701369.

The spelling of 506765531 in words is "five hundred six million, seven hundred sixty-five thousand, five hundred thirty-one".