85539278 has 8 divisors (see below), whose sum is σ = 139973400. Its totient is φ = 38881480.

The previous prime is 85539271. The next prime is 85539287. The reversal of 85539278 is 87293558.

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

It is a super-2 number, since 2×85539278² = 14633936161522568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85539271) 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, 1944053 + ... + 1944096.

It is an arithmetic number, because the mean of its divisors is an integer number (17496675).

Almost surely, 2^85539278 is an apocalyptic number.

85539278 is a deficient number, since it is larger than the sum of its proper divisors (54434122).

85539278 is a wasteful number, since it uses less digits than its factorization.

85539278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888162.

The product of its digits is 604800, while the sum is 47.

The square root of 85539278 is about 9248.7446715757. The cubic root of 85539278 is about 440.6108560958.

The spelling of 85539278 in words is "eighty-five million, five hundred thirty-nine thousand, two hundred seventy-eight".