85608251 has 2 divisors, whose sum is σ = 85608252. Its totient is φ = 85608250.

The previous prime is 85608247. The next prime is 85608253. The reversal of 85608251 is 15280658.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85608251 - 2² = 85608247 is a prime.

Together with 85608253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85608253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42804125 + 42804126.

It is an arithmetic number, because the mean of its divisors is an integer number (42804126).

Almost surely, 2^85608251 is an apocalyptic number.

85608251 is a deficient number, since it is larger than the sum of its proper divisors (1).

85608251 is an equidigital number, since it uses as much as digits as its factorization.

85608251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 85608251 is about 9252.4726965282. The cubic root of 85608251 is about 440.7292503927.

The spelling of 85608251 in words is "eighty-five million, six hundred eight thousand, two hundred fifty-one".