85229056 has 80 divisors (see below), whose sum is σ = 191260080. Its totient is φ = 37601280.

The previous prime is 85229047. The next prime is 85229059. The reversal of 85229056 is 65092258.

It is a happy number.

It is a super-2 number, since 2×85229056² = 14527983973302272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85229059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208180 + ... + 208588.

It is an arithmetic number, because the mean of its divisors is an integer number (2390751).

Almost surely, 2^85229056 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 85229056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95630040).

85229056 is an abundant number, since it is smaller than the sum of its proper divisors (106031024).

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

85229056 is a wasteful number, since it uses less digits than its factorization.

85229056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 85229056 is about 9231.9584054522. The cubic root of 85229056 is about 440.0775620843.

It can be divided in two parts, 8522 and 9056, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 85229056 in words is "eighty-five million, two hundred twenty-nine thousand, fifty-six".