85421752 has 64 divisors (see below), whose sum is σ = 180028800. Its totient is φ = 37739520.

The previous prime is 85421741. The next prime is 85421759. The reversal of 85421752 is 25712458.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85421759) 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, 303852 + ... + 304132.

It is an arithmetic number, because the mean of its divisors is an integer number (2812950).

Almost surely, 2^85421752 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 85421752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90014400).

85421752 is an abundant number, since it is smaller than the sum of its proper divisors (94607048).

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

85421752 is a wasteful number, since it uses less digits than its factorization.

85421752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 412 counting only the distinct ones).

The product of its digits is 22400, while the sum is 34.

The square root of 85421752 is about 9242.3888686854. The cubic root of 85421752 is about 440.4089723666.

The spelling of 85421752 in words is "eighty-five million, four hundred twenty-one thousand, seven hundred fifty-two".