84755521 has 8 divisors (see below), whose sum is σ = 85680000. Its totient is φ = 83836080.

The previous prime is 84755513. The next prime is 84755543. The reversal of 84755521 is 12555748.

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 84755521 - 2³ = 84755513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84755221) 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, 39330 + ... + 41428.

It is an arithmetic number, because the mean of its divisors is an integer number (10710000).

Almost surely, 2^84755521 is an apocalyptic number.

It is an amenable number.

84755521 is a deficient number, since it is larger than the sum of its proper divisors (924479).

84755521 is a wasteful number, since it uses less digits than its factorization.

84755521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519.

The product of its digits is 56000, while the sum is 37.

The square root of 84755521 is about 9206.2761744367. The cubic root of 84755521 is about 439.2610202537.

The spelling of 84755521 in words is "eighty-four million, seven hundred fifty-five thousand, five hundred twenty-one".