85001251 has 2 divisors, whose sum is σ = 85001252. Its totient is φ = 85001250.

The previous prime is 85001249. The next prime is 85001317. The reversal of 85001251 is 15210058.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85001251 - 2¹ = 85001249 is a prime.

Together with 85001249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (85001201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42500625 + 42500626.

It is an arithmetic number, because the mean of its divisors is an integer number (42500626).

Almost surely, 2^85001251 is an apocalyptic number.

85001251 is a deficient number, since it is larger than the sum of its proper divisors (1).

85001251 is an equidigital number, since it uses as much as digits as its factorization.

85001251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 85001251 is about 9219.6123020439. The cubic root of 85001251 is about 439.6851242381.

The spelling of 85001251 in words is "eighty-five million, one thousand, two hundred fifty-one".