85610851 has 4 divisors (see below), whose sum is σ = 85630104. Its totient is φ = 85591600.

The previous prime is 85610843. The next prime is 85610857. The reversal of 85610851 is 15801658.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15801658 = 2 ⋅7900829.

It is a cyclic number.

It is not a de Polignac number, because 85610851 - 2³ = 85610843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85610857) 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, 831 + ... + 13111.

It is an arithmetic number, because the mean of its divisors is an integer number (21407526).

Almost surely, 2^85610851 is an apocalyptic number.

85610851 is a deficient number, since it is larger than the sum of its proper divisors (19253).

85610851 is a wasteful number, since it uses less digits than its factorization.

85610851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19252.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 85610851 is about 9252.6131984429. The cubic root of 85610851 is about 440.7337121295.

The spelling of 85610851 in words is "eighty-five million, six hundred ten thousand, eight hundred fifty-one".