85410251 has 2 divisors, whose sum is σ = 85410252. Its totient is φ = 85410250.

The previous prime is 85410223. The next prime is 85410253. The reversal of 85410251 is 15201458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85410251 - 2²² = 81215947 is a prime.

Together with 85410253, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85410251.

It is not a weakly prime, because it can be changed into another prime (85410253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42705125 + 42705126.

It is an arithmetic number, because the mean of its divisors is an integer number (42705126).

Almost surely, 2^85410251 is an apocalyptic number.

85410251 is a deficient number, since it is larger than the sum of its proper divisors (1).

85410251 is an equidigital number, since it uses as much as digits as its factorization.

85410251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 85410251 is about 9241.7666601143. The cubic root of 85410251 is about 440.3892062422.

The spelling of 85410251 in words is "eighty-five million, four hundred ten thousand, two hundred fifty-one".