85008561 has 16 divisors (see below), whose sum is σ = 124305408. Its totient is φ = 51246800.

The previous prime is 85008533. The next prime is 85008589. The reversal of 85008561 is 16580058.

It is an interprime number because it is at equal distance from previous prime (85008533) and next prime (85008589).

It is not a de Polignac number, because 85008561 - 2⁷ = 85008433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (85008761) 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, 441 + ... + 13046.

It is an arithmetic number, because the mean of its divisors is an integer number (7769088).

Almost surely, 2^85008561 is an apocalyptic number.

It is an amenable number.

85008561 is a deficient number, since it is larger than the sum of its proper divisors (39296847).

85008561 is a wasteful number, since it uses less digits than its factorization.

85008561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13692.

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 85008561 is about 9220.0087310154. The cubic root of 85008561 is about 439.6977279982.

The spelling of 85008561 in words is "eighty-five million, eight thousand, five hundred sixty-one".