85311552 has 56 divisors (see below), whose sum is σ = 226807776. Its totient is φ = 28300288.

The previous prime is 85311521. The next prime is 85311553. The reversal of 85311552 is 25511358.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (85311553) 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, 43783 + ... + 45689.

Almost surely, 2^85311552 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 85311552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113403888).

85311552 is an abundant number, since it is smaller than the sum of its proper divisors (141496224).

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

85311552 is a wasteful number, since it uses less digits than its factorization.

85311552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155 (or 2145 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 85311552 is about 9236.4252825430. The cubic root of 85311552 is about 440.2195048015.

The spelling of 85311552 in words is "eighty-five million, three hundred eleven thousand, five hundred fifty-two".