85529081 has 8 divisors (see below), whose sum is σ = 93576000. Its totient is φ = 77527440.

The previous prime is 85529077. The next prime is 85529141. The reversal of 85529081 is 18092558.

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 85529081 - 2² = 85529077 is a prime.

It is a super-2 number, since 2×85529081² = 14630447393409122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85529281) 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 7 ways as a sum of consecutive naturals, for example, 7301 + ... + 14978.

It is an arithmetic number, because the mean of its divisors is an integer number (11697000).

Almost surely, 2^85529081 is an apocalyptic number.

It is an amenable number.

85529081 is a deficient number, since it is larger than the sum of its proper divisors (8046919).

85529081 is a wasteful number, since it uses less digits than its factorization.

85529081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22639.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 85529081 is about 9248.1933911440. The cubic root of 85529081 is about 440.5933472291.

The spelling of 85529081 in words is "eighty-five million, five hundred twenty-nine thousand, eighty-one".