84535521 has 8 divisors (see below), whose sum is σ = 128816064. Its totient is φ = 48306000.

The previous prime is 84535519. The next prime is 84535523. The reversal of 84535521 is 12553548.

It is an interprime number because it is at equal distance from previous prime (84535519) and next prime (84535523).

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

It is not a de Polignac number, because 84535521 - 2¹ = 84535519 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84535523) 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, 2012730 + ... + 2012771.

It is an arithmetic number, because the mean of its divisors is an integer number (16102008).

Almost surely, 2^84535521 is an apocalyptic number.

It is an amenable number.

84535521 is a deficient number, since it is larger than the sum of its proper divisors (44280543).

84535521 is a wasteful number, since it uses less digits than its factorization.

84535521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4025511.

The product of its digits is 24000, while the sum is 33.

The square root of 84535521 is about 9194.3200401117. The cubic root of 84535521 is about 438.8806274956.

The spelling of 84535521 in words is "eighty-four million, five hundred thirty-five thousand, five hundred twenty-one".