85121061 has 8 divisors (see below), whose sum is σ = 117408480. Its totient is φ = 54790512.

The previous prime is 85121059. The next prime is 85121087. The reversal of 85121061 is 16012158.

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

It is not a de Polignac number, because 85121061 - 2¹ = 85121059 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85121041) 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, 489115 + ... + 489288.

It is an arithmetic number, because the mean of its divisors is an integer number (14676060).

Almost surely, 2^85121061 is an apocalyptic number.

It is an amenable number.

85121061 is a deficient number, since it is larger than the sum of its proper divisors (32287419).

85121061 is a wasteful number, since it uses less digits than its factorization.

85121061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978435.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 85121061 is about 9226.1075757873. The cubic root of 85121061 is about 439.8916072531.

It can be divided in two parts, 851 and 21061, that added together give a palindrome (21912).

The spelling of 85121061 in words is "eighty-five million, one hundred twenty-one thousand, sixty-one".