85021056 has 128 divisors (see below), whose sum is σ = 255122400. Its totient is φ = 27869184.

The previous prime is 85021051. The next prime is 85021061. The reversal of 85021056 is 65012058.

It is an interprime number because it is at equal distance from previous prime (85021051) and next prime (85021061).

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85021051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252120 + ... + 252456.

Almost surely, 2^85021056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85021056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127561200).

85021056 is an abundant number, since it is smaller than the sum of its proper divisors (170101344).

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

85021056 is a wasteful number, since it uses less digits than its factorization.

85021056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 85021056 is about 9220.6863085130. The cubic root of 85021056 is about 439.7192699617.

The spelling of 85021056 in words is "eighty-five million, twenty-one thousand, fifty-six".