85488581 has 8 divisors (see below), whose sum is σ = 91514400. Its totient is φ = 79615440.

The previous prime is 85488577. The next prime is 85488587. The reversal of 85488581 is 18588458.

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 85488581 - 2² = 85488577 is a prime.

It is a super-2 number, since 2×85488581² = 14616594962787122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85488587) 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, 37010 + ... + 39251.

It is an arithmetic number, because the mean of its divisors is an integer number (11439300).

Almost surely, 2^85488581 is an apocalyptic number.

It is an amenable number.

85488581 is a deficient number, since it is larger than the sum of its proper divisors (6025819).

85488581 is a wasteful number, since it uses less digits than its factorization.

85488581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76339.

The product of its digits is 409600, while the sum is 47.

The square root of 85488581 is about 9246.0035150329. The cubic root of 85488581 is about 440.5237925326.

The spelling of 85488581 in words is "eighty-five million, four hundred eighty-eight thousand, five hundred eighty-one".