85305291 has 8 divisors (see below), whose sum is σ = 113888064. Its totient is φ = 56796360.

The previous prime is 85305289. The next prime is 85305299. The reversal of 85305291 is 19250358.

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

It is not a de Polignac number, because 85305291 - 2¹ = 85305289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85305299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15705 + ... + 20426.

It is an arithmetic number, because the mean of its divisors is an integer number (14236008).

Almost surely, 2^85305291 is an apocalyptic number.

85305291 is a deficient number, since it is larger than the sum of its proper divisors (28582773).

85305291 is a wasteful number, since it uses less digits than its factorization.

85305291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36921.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 85305291 is about 9236.0863464998. The cubic root of 85305291 is about 440.2087353270.

The spelling of 85305291 in words is "eighty-five million, three hundred five thousand, two hundred ninety-one".