85822251 has 4 divisors (see below), whose sum is σ = 114429672. Its totient is φ = 57214832.

The previous prime is 85822237. The next prime is 85822267. The reversal of 85822251 is 15222858.

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

It is a cyclic number.

It is not a de Polignac number, because 85822251 - 2⁷ = 85822123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85822201) 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, 14303706 + ... + 14303711.

It is an arithmetic number, because the mean of its divisors is an integer number (28607418).

Almost surely, 2^85822251 is an apocalyptic number.

85822251 is a deficient number, since it is larger than the sum of its proper divisors (28607421).

85822251 is a wasteful number, since it uses less digits than its factorization.

85822251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28607420.

The product of its digits is 12800, while the sum is 33.

The square root of 85822251 is about 9264.0299546148. The cubic root of 85822251 is about 441.0961837911.

The spelling of 85822251 in words is "eighty-five million, eight hundred twenty-two thousand, two hundred fifty-one".