85312751 has 4 divisors (see below), whose sum is σ = 88254600. Its totient is φ = 82370904.

The previous prime is 85312741. The next prime is 85312753. The reversal of 85312751 is 15721358.

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

It is not a de Polignac number, because 85312751 - 2¹⁸ = 85050607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85312753) 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, 1470881 + ... + 1470938.

It is an arithmetic number, because the mean of its divisors is an integer number (22063650).

Almost surely, 2^85312751 is an apocalyptic number.

85312751 is a deficient number, since it is larger than the sum of its proper divisors (2941849).

85312751 is a wasteful number, since it uses less digits than its factorization.

85312751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941848.

The product of its digits is 8400, while the sum is 32.

The square root of 85312751 is about 9236.4901883778. The cubic root of 85312751 is about 440.2215671276.

The spelling of 85312751 in words is "eighty-five million, three hundred twelve thousand, seven hundred fifty-one".