8825521 has 4 divisors (see below), whose sum is σ = 8831844. Its totient is φ = 8819200.

The previous prime is 8825503. The next prime is 8825539. The reversal of 8825521 is 1255288.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (8825503) and next prime (8825539).

It can be written as a sum of positive squares in 2 ways, for example, as 6682225 + 2143296 = 2585^2 + 1464^2 .

It is a cyclic number.

It is not a de Polignac number, because 8825521 - 2⁵ = 8825489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8825501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40 + ... + 4201.

It is an arithmetic number, because the mean of its divisors is an integer number (2207961).

Almost surely, 2^8825521 is an apocalyptic number.

It is an amenable number.

8825521 is a deficient number, since it is larger than the sum of its proper divisors (6323).

8825521 is a wasteful number, since it uses less digits than its factorization.

8825521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6322.

The product of its digits is 6400, while the sum is 31.

The square root of 8825521 is about 2970.7778442691. Note that the first 3 decimals coincide. The cubic root of 8825521 is about 206.6554124407.

The spelling of 8825521 in words is "eight million, eight hundred twenty-five thousand, five hundred twenty-one".