84554561 has 8 divisors (see below), whose sum is σ = 104067264. Its totient is φ = 66900240.

The previous prime is 84554543. The next prime is 84554581. The reversal of 84554561 is 16545548.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 84554561 - 2⁶ = 84554497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84554581) 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, 464495 + ... + 464676.

It is an arithmetic number, because the mean of its divisors is an integer number (13008408).

Almost surely, 2^84554561 is an apocalyptic number.

It is an amenable number.

84554561 is a deficient number, since it is larger than the sum of its proper divisors (19512703).

84554561 is a wasteful number, since it uses less digits than its factorization.

84554561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929191.

The product of its digits is 96000, while the sum is 38.

The square root of 84554561 is about 9195.3554036807. The cubic root of 84554561 is about 438.9135748285.

The spelling of 84554561 in words is "eighty-four million, five hundred fifty-four thousand, five hundred sixty-one".