84267521 has 8 divisors (see below), whose sum is σ = 96088104. Its totient is φ = 73209600.

The previous prime is 84267503. The next prime is 84267539. The reversal of 84267521 is 12576248.

It is an interprime number because it is at equal distance from previous prime (84267503) and next prime (84267539).

It can be written as a sum of positive squares in 4 ways, for example, as 18835600 + 65431921 = 4340^2 + 8089^2 .

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 84267521 - 2²⁶ = 17158657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84267541) 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, 190430 + ... + 190871.

It is an arithmetic number, because the mean of its divisors is an integer number (12011013).

Almost surely, 2^84267521 is an apocalyptic number.

It is an amenable number.

84267521 is a deficient number, since it is larger than the sum of its proper divisors (11820583).

84267521 is a wasteful number, since it uses less digits than its factorization.

84267521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381331.

The product of its digits is 26880, while the sum is 35.

The square root of 84267521 is about 9179.7342554128. The cubic root of 84267521 is about 438.4163472274.

The spelling of 84267521 in words is "eighty-four million, two hundred sixty-seven thousand, five hundred twenty-one".