527942509 has 2 divisors, whose sum is σ = 527942510. Its totient is φ = 527942508.

The previous prime is 527942501. The next prime is 527942521. The reversal of 527942509 is 905249725.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 501625609 + 26316900 = 22397^2 + 5130^2 .

It is a cyclic number.

It is not a de Polignac number, because 527942509 - 2³ = 527942501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (527942501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263971254 + 263971255.

It is an arithmetic number, because the mean of its divisors is an integer number (263971255).

Almost surely, 2^527942509 is an apocalyptic number.

It is an amenable number.

527942509 is a deficient number, since it is larger than the sum of its proper divisors (1).

527942509 is an equidigital number, since it uses as much as digits as its factorization.

527942509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 527942509 is about 22976.9995647822. Note that the first 3 decimals coincide. The cubic root of 527942509 is about 808.2186678412.

The spelling of 527942509 in words is "five hundred twenty-seven million, nine hundred forty-two thousand, five hundred nine".