85771512 has 48 divisors (see below), whose sum is σ = 232741080. Its totient is φ = 28536000.

The previous prime is 85771501. The next prime is 85771519. The reversal of 85771512 is 21517758.

It is a super-2 number, since 2×85771512² = 14713504541532288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85771519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58387 + ... + 59837.

Almost surely, 2^85771512 is an apocalyptic number.

It is an amenable number.

85771512 is an abundant number, since it is smaller than the sum of its proper divisors (146969568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85771512 is a wasteful number, since it uses less digits than its factorization.

85771512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284 (or 2277 counting only the distinct ones).

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

The square root of 85771512 is about 9261.2910547072. The cubic root of 85771512 is about 441.0092397836.

The spelling of 85771512 in words is "eighty-five million, seven hundred seventy-one thousand, five hundred twelve".