85122851 has 4 divisors (see below), whose sum is σ = 92861304. Its totient is φ = 77384400.

The previous prime is 85122833. The next prime is 85122853. The reversal of 85122851 is 15822158.

It is a happy number.

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 85122851 - 2¹⁴ = 85106467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85122853) 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, 3869210 + ... + 3869231.

It is an arithmetic number, because the mean of its divisors is an integer number (23215326).

Almost surely, 2^85122851 is an apocalyptic number.

85122851 is a deficient number, since it is larger than the sum of its proper divisors (7738453).

85122851 is a wasteful number, since it uses less digits than its factorization.

85122851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7738452.

The product of its digits is 6400, while the sum is 32.

The square root of 85122851 is about 9226.2045826006. The cubic root of 85122851 is about 439.8946907064.

The spelling of 85122851 in words is "eighty-five million, one hundred twenty-two thousand, eight hundred fifty-one".