85141281 has 4 divisors (see below), whose sum is σ = 113521712. Its totient is φ = 56760852.

The previous prime is 85141279. The next prime is 85141289. The reversal of 85141281 is 18214158.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 85141281 - 2¹ = 85141279 is a prime.

It is a super-2 number, since 2×85141281² = 14498075460641922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85141289) 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 3 ways as a sum of consecutive naturals, for example, 14190211 + ... + 14190216.

It is an arithmetic number, because the mean of its divisors is an integer number (28380428).

Almost surely, 2^85141281 is an apocalyptic number.

It is an amenable number.

85141281 is a deficient number, since it is larger than the sum of its proper divisors (28380431).

85141281 is a wasteful number, since it uses less digits than its factorization.

85141281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28380430.

The product of its digits is 2560, while the sum is 30.

The square root of 85141281 is about 9227.2033141142. The cubic root of 85141281 is about 439.9264357041.

The spelling of 85141281 in words is "eighty-five million, one hundred forty-one thousand, two hundred eighty-one".