84575281 has 16 divisors (see below), whose sum is σ = 102326400. Its totient is φ = 68358528.

The previous prime is 84575273. The next prime is 84575297. The reversal of 84575281 is 18257548.

It is not a de Polignac number, because 84575281 - 2³ = 84575273 is a prime.

It is a super-2 number, since 2×84575281² = 14305956312457922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84575201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3885 + ... + 13573.

It is an arithmetic number, because the mean of its divisors is an integer number (6395400).

Almost surely, 2^84575281 is an apocalyptic number.

It is an amenable number.

84575281 is a deficient number, since it is larger than the sum of its proper divisors (17751119).

84575281 is a wasteful number, since it uses less digits than its factorization.

84575281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9768.

The product of its digits is 89600, while the sum is 40.

The square root of 84575281 is about 9196.4819904135. The cubic root of 84575281 is about 438.9494236596.

The spelling of 84575281 in words is "eighty-four million, five hundred seventy-five thousand, two hundred eighty-one".