85256550 has 84 divisors (see below), whose sum is σ = 237858660. Its totient is φ = 22725360.

The previous prime is 85256537. The next prime is 85256557. The reversal of 85256550 is 5565258.

85256550 is a `hidden beast` number, since 8 + 52 + 56 + 550 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85256557) 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 41 ways as a sum of consecutive naturals, for example, 35281 + ... + 37619.

Almost surely, 2^85256550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85256550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118929330).

85256550 is an abundant number, since it is smaller than the sum of its proper divisors (152602110).

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

85256550 is a wasteful number, since it uses less digits than its factorization.

85256550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369 (or 2349 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 85256550 is about 9233.4473518833. The cubic root of 85256550 is about 440.1248784661.

The spelling of 85256550 in words is "eighty-five million, two hundred fifty-six thousand, five hundred fifty".