85312051 has 4 divisors (see below), whose sum is σ = 93067704. Its totient is φ = 77556400.

The previous prime is 85312049. The next prime is 85312057. The reversal of 85312051 is 15021358.

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 85312051 - 2¹ = 85312049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85312057) 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, 3877810 + ... + 3877831.

It is an arithmetic number, because the mean of its divisors is an integer number (23266926).

Almost surely, 2^85312051 is an apocalyptic number.

85312051 is a deficient number, since it is larger than the sum of its proper divisors (7755653).

85312051 is a wasteful number, since it uses less digits than its factorization.

85312051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7755652.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 85312051 is about 9236.4522951185. The cubic root of 85312051 is about 440.2203631030.

The spelling of 85312051 in words is "eighty-five million, three hundred twelve thousand, fifty-one".