85224081 has 8 divisors (see below), whose sum is σ = 113676480. Its totient is φ = 56793872.

The previous prime is 85224079. The next prime is 85224089. The reversal of 85224081 is 18042258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85224081 - 2¹ = 85224079 is a prime.

It is a super-2 number, since 2×85224081² = 14526287964589122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85224089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8500 + ... + 15578.

It is an arithmetic number, because the mean of its divisors is an integer number (14209560).

Almost surely, 2^85224081 is an apocalyptic number.

It is an amenable number.

85224081 is a deficient number, since it is larger than the sum of its proper divisors (28452399).

85224081 is a wasteful number, since it uses less digits than its factorization.

85224081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11095.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 85224081 is about 9231.6889570652. The cubic root of 85224081 is about 440.0689991655.

The spelling of 85224081 in words is "eighty-five million, two hundred twenty-four thousand, eighty-one".