85378271 has 4 divisors (see below), whose sum is σ = 93139944. Its totient is φ = 77616600.

The previous prime is 85378261. The next prime is 85378289. The reversal of 85378271 is 17287358.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85378271 - 2⁶ = 85378207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85378201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3880820 + ... + 3880841.

It is an arithmetic number, because the mean of its divisors is an integer number (23284986).

Almost surely, 2^85378271 is an apocalyptic number.

85378271 is a deficient number, since it is larger than the sum of its proper divisors (7761673).

85378271 is a wasteful number, since it uses less digits than its factorization.

85378271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7761672.

The product of its digits is 94080, while the sum is 41.

The square root of 85378271 is about 9240.0363094525. The cubic root of 85378271 is about 440.3342346793.

The spelling of 85378271 in words is "eighty-five million, three hundred seventy-eight thousand, two hundred seventy-one".