8521359 has 32 divisors (see below), whose sum is σ = 14562816. Its totient is φ = 4302720.

The previous prime is 8521343. The next prime is 8521391. The reversal of 8521359 is 9531258.

It is not a de Polignac number, because 8521359 - 2⁴ = 8521343 is a prime.

It is a super-2 number, since 2×8521359² = 145227118413762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8521259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8049 + ... + 9045.

It is an arithmetic number, because the mean of its divisors is an integer number (455088).

Almost surely, 2^8521359 is an apocalyptic number.

8521359 is a deficient number, since it is larger than the sum of its proper divisors (6041457).

8521359 is a wasteful number, since it uses less digits than its factorization.

8521359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055.

The product of its digits is 10800, while the sum is 33.

The square root of 8521359 is about 2919.1366874472. The cubic root of 8521359 is about 204.2535534299.

It can be divided in two parts, 852 and 1359, that added together give a triangular number (2211 = T₆₆).

The spelling of 8521359 in words is "eight million, five hundred twenty-one thousand, three hundred fifty-nine".