85912577 has 4 divisors (see below), whose sum is σ = 90966276. Its totient is φ = 80858880.

The previous prime is 85912549. The next prime is 85912621. The reversal of 85912577 is 77521958.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77521958 = 2 ⋅38760979.

It can be written as a sum of positive squares in 2 ways, for example, as 71842576 + 14070001 = 8476^2 + 3751^2 .

It is a cyclic number.

It is not a de Polignac number, because 85912577 - 2²⁰ = 84864001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85912517) 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, 2526824 + ... + 2526857.

It is an arithmetic number, because the mean of its divisors is an integer number (22741569).

Almost surely, 2^85912577 is an apocalyptic number.

It is an amenable number.

85912577 is a deficient number, since it is larger than the sum of its proper divisors (5053699).

85912577 is a wasteful number, since it uses less digits than its factorization.

85912577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053698.

The product of its digits is 176400, while the sum is 44.

The square root of 85912577 is about 9268.9037647394. The cubic root of 85912577 is about 441.2508774897.

The spelling of 85912577 in words is "eighty-five million, nine hundred twelve thousand, five hundred seventy-seven".