85297759 has 2 divisors, whose sum is σ = 85297760. Its totient is φ = 85297758.

The previous prime is 85297757. The next prime is 85297763. The reversal of 85297759 is 95779258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85297759 - 2¹ = 85297757 is a prime.

Together with 85297757, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85297757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42648879 + 42648880.

It is an arithmetic number, because the mean of its divisors is an integer number (42648880).

Almost surely, 2^85297759 is an apocalyptic number.

85297759 is a deficient number, since it is larger than the sum of its proper divisors (1).

85297759 is an equidigital number, since it uses as much as digits as its factorization.

85297759 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1587600, while the sum is 52.

The square root of 85297759 is about 9235.6785890372. The cubic root of 85297759 is about 440.1957789217.

The spelling of 85297759 in words is "eighty-five million, two hundred ninety-seven thousand, seven hundred fifty-nine".