85278051 has 24 divisors (see below), whose sum is σ = 125478080. Its totient is φ = 55800576.

The previous prime is 85278041. The next prime is 85278059. The reversal of 85278051 is 15087258.

85278051 is a `hidden beast` number, since 8 + 527 + 80 + 51 = 666.

It is not a de Polignac number, because 85278051 - 2¹¹ = 85276003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85277997 and 85278015.

It is not an unprimeable number, because it can be changed into a prime (85278059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196731 + ... + 197163.

Almost surely, 2^85278051 is an apocalyptic number.

85278051 is a deficient number, since it is larger than the sum of its proper divisors (40200029).

85278051 is a wasteful number, since it uses less digits than its factorization.

85278051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 85278051 is about 9234.6115781878. The cubic root of 85278051 is about 440.1618739799.

The spelling of 85278051 in words is "eighty-five million, two hundred seventy-eight thousand, fifty-one".