84932521 has 4 divisors (see below), whose sum is σ = 85808212. Its totient is φ = 84056832.

The previous prime is 84932513. The next prime is 84932563. The reversal of 84932521 is 12523948.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40896025 + 44036496 = 6395^2 + 6636^2 .

It is a cyclic number.

It is not a de Polignac number, because 84932521 - 2³ = 84932513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84932321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437700 + ... + 437893.

It is an arithmetic number, because the mean of its divisors is an integer number (21452053).

Almost surely, 2^84932521 is an apocalyptic number.

It is an amenable number.

84932521 is a deficient number, since it is larger than the sum of its proper divisors (875691).

84932521 is an equidigital number, since it uses as much as digits as its factorization.

84932521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875690.

The product of its digits is 17280, while the sum is 34.

The square root of 84932521 is about 9215.8841681089. The cubic root of 84932521 is about 439.5665859546.

The spelling of 84932521 in words is "eighty-four million, nine hundred thirty-two thousand, five hundred twenty-one".