85782751 has 4 divisors (see below), whose sum is σ = 85909032. Its totient is φ = 85656472.

The previous prime is 85782743. The next prime is 85782757. The reversal of 85782751 is 15728758.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15728758 = 2 ⋅7864379.

It is a cyclic number.

It is not a de Polignac number, because 85782751 - 2³ = 85782743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85782698 and 85782707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85782757) 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, 62116 + ... + 63481.

It is an arithmetic number, because the mean of its divisors is an integer number (21477258).

Almost surely, 2^85782751 is an apocalyptic number.

85782751 is a deficient number, since it is larger than the sum of its proper divisors (126281).

85782751 is a wasteful number, since it uses less digits than its factorization.

85782751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126280.

The product of its digits is 156800, while the sum is 43.

The square root of 85782751 is about 9261.8978076850. The cubic root of 85782751 is about 441.0285013708.

The spelling of 85782751 in words is "eighty-five million, seven hundred eighty-two thousand, seven hundred fifty-one".