85278951 has 12 divisors (see below), whose sum is σ = 123293040. Its totient is φ = 56800800.

The previous prime is 85278929. The next prime is 85278971. The reversal of 85278951 is 15987258.

It is a happy number.

It is not a de Polignac number, because 85278951 - 2²³ = 76890343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85278897 and 85278906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85278901) 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, 7926 + ... + 15276.

It is an arithmetic number, because the mean of its divisors is an integer number (10274420).

Almost surely, 2^85278951 is an apocalyptic number.

85278951 is a deficient number, since it is larger than the sum of its proper divisors (38014089).

85278951 is a wasteful number, since it uses less digits than its factorization.

85278951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8646 (or 8643 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 85278951 is about 9234.6603077753. The cubic root of 85278951 is about 440.1634224217.

The spelling of 85278951 in words is "eighty-five million, two hundred seventy-eight thousand, nine hundred fifty-one".