86850251 has 4 divisors (see below), whose sum is σ = 89651904. Its totient is φ = 84048600.

The previous prime is 86850241. The next prime is 86850271. The reversal of 86850251 is 15205868.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86850251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86850221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400780 + ... + 1400841.

It is an arithmetic number, because the mean of its divisors is an integer number (22412976).

Almost surely, 2^86850251 is an apocalyptic number.

86850251 is a deficient number, since it is larger than the sum of its proper divisors (2801653).

86850251 is a wasteful number, since it uses less digits than its factorization.

86850251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2801652.

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

The square root of 86850251 is about 9319.3482068222. The cubic root of 86850251 is about 442.8503843823.

The spelling of 86850251 in words is "eighty-six million, eight hundred fifty thousand, two hundred fifty-one".