85278597 has 12 divisors (see below), whose sum is σ = 115349280. Its totient is φ = 56041720.

The previous prime is 85278577. The next prime is 85278607. The reversal of 85278597 is 79587258.

It is not a de Polignac number, because 85278597 - 2⁷ = 85278469 is a prime.

85278597 is a modest number, since divided by 78597 gives 852 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85278547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12304 + ... + 17942.

It is an arithmetic number, because the mean of its divisors is an integer number (9612440).

Almost surely, 2^85278597 is an apocalyptic number.

It is an amenable number.

85278597 is a deficient number, since it is larger than the sum of its proper divisors (30070683).

85278597 is an equidigital number, since it uses as much as digits as its factorization.

85278597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784 (or 5713 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 51.

The square root of 85278597 is about 9234.6411408349. The cubic root of 85278597 is about 440.1628133693.

The spelling of 85278597 in words is "eighty-five million, two hundred seventy-eight thousand, five hundred ninety-seven".