85872277 has 4 divisors (see below), whose sum is σ = 88833420. Its totient is φ = 82911136.

The previous prime is 85872251. The next prime is 85872307. The reversal of 85872277 is 77227858.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77227858 = 2 ⋅38613929.

It can be written as a sum of positive squares in 2 ways, for example, as 61606801 + 24265476 = 7849^2 + 4926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85872277 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 (85872217) 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, 1480528 + ... + 1480585.

It is an arithmetic number, because the mean of its divisors is an integer number (22208355).

Almost surely, 2^85872277 is an apocalyptic number.

It is an amenable number.

85872277 is a deficient number, since it is larger than the sum of its proper divisors (2961143).

85872277 is a wasteful number, since it uses less digits than its factorization.

85872277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961142.

The product of its digits is 439040, while the sum is 46.

The square root of 85872277 is about 9266.7295741270. The cubic root of 85872277 is about 441.1818724919.

The spelling of 85872277 in words is "eighty-five million, eight hundred seventy-two thousand, two hundred seventy-seven".