85577527 has 4 divisors (see below), whose sum is σ = 97802896. Its totient is φ = 73352160.

The previous prime is 85577519. The next prime is 85577533. The reversal of 85577527 is 72577558.

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

It is not a de Polignac number, because 85577527 - 2³ = 85577519 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 (85577587) 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, 6112674 + ... + 6112687.

It is an arithmetic number, because the mean of its divisors is an integer number (24450724).

Almost surely, 2^85577527 is an apocalyptic number.

85577527 is a deficient number, since it is larger than the sum of its proper divisors (12225369).

85577527 is a wasteful number, since it uses less digits than its factorization.

85577527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12225368.

The product of its digits is 686000, while the sum is 46.

The square root of 85577527 is about 9250.8122346095. The cubic root of 85577527 is about 440.6765195497.

The spelling of 85577527 in words is "eighty-five million, five hundred seventy-seven thousand, five hundred twenty-seven".