240528857 has 2 divisors, whose sum is σ = 240528858. Its totient is φ = 240528856.

The previous prime is 240528853. The next prime is 240528881. The reversal of 240528857 is 758825042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120648256 + 119880601 = 10984^2 + 10949^2 .

It is a cyclic number.

It is not a de Polignac number, because 240528857 - 2² = 240528853 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (240528853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120264428 + 120264429.

It is an arithmetic number, because the mean of its divisors is an integer number (120264429).

Almost surely, 2^240528857 is an apocalyptic number.

It is an amenable number.

240528857 is a deficient number, since it is larger than the sum of its proper divisors (1).

240528857 is an equidigital number, since it uses as much as digits as its factorization.

240528857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 240528857 is about 15508.9927783851. The cubic root of 240528857 is about 621.9026334429.

The spelling of 240528857 in words is "two hundred forty million, five hundred twenty-eight thousand, eight hundred fifty-seven".