85911277 has 4 divisors (see below), whose sum is σ = 88006716. Its totient is φ = 83815840.

The previous prime is 85911271. The next prime is 85911283. The reversal of 85911277 is 77211958.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77211958 = 2 ⋅38605979.

It is an interprime number because it is at equal distance from previous prime (85911271) and next prime (85911283).

It can be written as a sum of positive squares in 2 ways, for example, as 24147396 + 61763881 = 4914^2 + 7859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85911277 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85911271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047658 + ... + 1047739.

It is an arithmetic number, because the mean of its divisors is an integer number (22001679).

Almost surely, 2^85911277 is an apocalyptic number.

It is an amenable number.

85911277 is a deficient number, since it is larger than the sum of its proper divisors (2095439).

85911277 is a wasteful number, since it uses less digits than its factorization.

85911277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095438.

The product of its digits is 35280, while the sum is 40.

The square root of 85911277 is about 9268.8336375188. The cubic root of 85911277 is about 441.2486518589.

The spelling of 85911277 in words is "eighty-five million, nine hundred eleven thousand, two hundred seventy-seven".