8956521 has 16 divisors (see below), whose sum is σ = 15164800. Its totient is φ = 5117904.

The previous prime is 8956517. The next prime is 8956531. The reversal of 8956521 is 1256598.

It is a happy number.

8956521 is a `hidden beast` number, since 89 + 56 + 521 = 666.

It is not a de Polignac number, because 8956521 - 2² = 8956517 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8956531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23506 + ... + 23883.

It is an arithmetic number, because the mean of its divisors is an integer number (947800).

Almost surely, 2^8956521 is an apocalyptic number.

It is an amenable number.

8956521 is a deficient number, since it is larger than the sum of its proper divisors (6208279).

8956521 is a wasteful number, since it uses less digits than its factorization.

8956521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47405 (or 47399 counting only the distinct ones).

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

The square root of 8956521 is about 2992.7447268352. The cubic root of 8956521 is about 207.6728786194.

The spelling of 8956521 in words is "eight million, nine hundred fifty-six thousand, five hundred twenty-one".