85041081 has 6 divisors (see below), whose sum is σ = 122837130. Its totient is φ = 56694048.

The previous prime is 85041071. The next prime is 85041107. The reversal of 85041081 is 18014058.

It can be written as a sum of positive squares in only one way, i.e., 79495056 + 5546025 = 8916^2 + 2355^2 .

It is not a de Polignac number, because 85041081 - 2⁹ = 85040569 is a prime.

It is a super-2 number, since 2×85041081² = 14463970915297122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85041071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4724496 + ... + 4724513.

It is an arithmetic number, because the mean of its divisors is an integer number (20472855).

Almost surely, 2^85041081 is an apocalyptic number.

It is an amenable number.

85041081 is a deficient number, since it is larger than the sum of its proper divisors (37796049).

85041081 is a wasteful number, since it uses less digits than its factorization.

85041081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9449015 (or 9449012 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 85041081 is about 9221.7721181994. The cubic root of 85041081 is about 439.7537895956.

The spelling of 85041081 in words is "eighty-five million, forty-one thousand, eighty-one".