85512771 has 24 divisors (see below), whose sum is σ = 133014960. Its totient is φ = 52740096.

The previous prime is 85512769. The next prime is 85512803. The reversal of 85512771 is 17721558.

It is not a de Polignac number, because 85512771 - 2¹ = 85512769 is a prime.

It is a super-3 number, since 3×85512771³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85512731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4291 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (5542290).

Almost surely, 2^85512771 is an apocalyptic number.

85512771 is a deficient number, since it is larger than the sum of its proper divisors (47502189).

85512771 is a wasteful number, since it uses less digits than its factorization.

85512771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9555 (or 9552 counting only the distinct ones).

The product of its digits is 19600, while the sum is 36.

The square root of 85512771 is about 9247.3115552576. The cubic root of 85512771 is about 440.5653390778.

The spelling of 85512771 in words is "eighty-five million, five hundred twelve thousand, seven hundred seventy-one".