85278315 has 8 divisors (see below), whose sum is σ = 136445328. Its totient is φ = 45481760.

The previous prime is 85278311. The next prime is 85278317. The reversal of 85278315 is 51387258.

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

It is not a de Polignac number, because 85278315 - 2² = 85278311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85278311) 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, 2842596 + ... + 2842625.

It is an arithmetic number, because the mean of its divisors is an integer number (17055666).

Almost surely, 2^85278315 is an apocalyptic number.

85278315 is a deficient number, since it is larger than the sum of its proper divisors (51167013).

85278315 is a wasteful number, since it uses less digits than its factorization.

85278315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5685229.

The product of its digits is 67200, while the sum is 39.

The square root of 85278315 is about 9234.6258722268. The cubic root of 85278315 is about 440.1623281907.

The spelling of 85278315 in words is "eighty-five million, two hundred seventy-eight thousand, three hundred fifteen".