8521956 has 48 divisors (see below), whose sum is σ = 23262400. Its totient is φ = 2690496.

The previous prime is 8521949. The next prime is 8521963. The reversal of 8521956 is 6591258.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8521949) and next prime (8521963).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 8521956.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25 + ... + 4128.

Almost surely, 2^8521956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8521956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11631200).

8521956 is an abundant number, since it is smaller than the sum of its proper divisors (14740444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8521956 is a wasteful number, since it uses less digits than its factorization.

8521956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185 (or 4177 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 8521956 is about 2919.2389419162. The cubic root of 8521956 is about 204.2583232686.

The spelling of 8521956 in words is "eight million, five hundred twenty-one thousand, nine hundred fifty-six".