85280297 has 4 divisors (see below), whose sum is σ = 88988160. Its totient is φ = 81572436.

The previous prime is 85280207. The next prime is 85280323. The reversal of 85280297 is 79208258.

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 a cyclic number.

It is not a de Polignac number, because 85280297 - 2¹⁰ = 85279273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85280207) 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, 1853897 + ... + 1853942.

It is an arithmetic number, because the mean of its divisors is an integer number (22247040).

Almost surely, 2^85280297 is an apocalyptic number.

It is an amenable number.

85280297 is a deficient number, since it is larger than the sum of its proper divisors (3707863).

85280297 is a wasteful number, since it uses less digits than its factorization.

85280297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707862.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 85280297 is about 9234.7331851007. The cubic root of 85280297 is about 440.1657381821.

The spelling of 85280297 in words is "eighty-five million, two hundred eighty thousand, two hundred ninety-seven".