85278701 has 4 divisors (see below), whose sum is σ = 85297500. Its totient is φ = 85259904.

The previous prime is 85278691. The next prime is 85278703. The reversal of 85278701 is 10787258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10787258 = 2 ⋅5393629.

It can be written as a sum of positive squares in 2 ways, for example, as 12773476 + 72505225 = 3574^2 + 8515^2 .

It is a cyclic number.

It is not a de Polignac number, because 85278701 - 2⁶ = 85278637 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85278703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075 + ... + 13223.

It is an arithmetic number, because the mean of its divisors is an integer number (21324375).

Almost surely, 2^85278701 is an apocalyptic number.

It is an amenable number.

85278701 is a deficient number, since it is larger than the sum of its proper divisors (18799).

85278701 is a wasteful number, since it uses less digits than its factorization.

85278701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18798.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 85278701 is about 9234.6467718045. The cubic root of 85278701 is about 440.1629923001.

The spelling of 85278701 in words is "eighty-five million, two hundred seventy-eight thousand, seven hundred one".