84825561 has 8 divisors (see below), whose sum is σ = 113465664. Its totient is φ = 56367920.

The previous prime is 84825511. The next prime is 84825569. The reversal of 84825561 is 16552848.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84825561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84825569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44526 + ... + 46391.

It is an arithmetic number, because the mean of its divisors is an integer number (14183208).

Almost surely, 2^84825561 is an apocalyptic number.

It is an amenable number.

84825561 is a deficient number, since it is larger than the sum of its proper divisors (28640103).

84825561 is a wasteful number, since it uses less digits than its factorization.

84825561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91231.

The product of its digits is 76800, while the sum is 39.

The square root of 84825561 is about 9210.0793156194. The cubic root of 84825561 is about 439.3819853175.

The spelling of 84825561 in words is "eighty-four million, eight hundred twenty-five thousand, five hundred sixty-one".