8755521 has 4 divisors (see below), whose sum is σ = 11674032. Its totient is φ = 5837012.

The previous prime is 8755517. The next prime is 8755529. The reversal of 8755521 is 1255578.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8755521 - 2² = 8755517 is a prime.

8755521 is a lucky number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (8755529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1459251 + ... + 1459256.

It is an arithmetic number, because the mean of its divisors is an integer number (2918508).

Almost surely, 2^8755521 is an apocalyptic number.

It is an amenable number.

8755521 is a deficient number, since it is larger than the sum of its proper divisors (2918511).

8755521 is a wasteful number, since it uses less digits than its factorization.

8755521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918510.

The product of its digits is 14000, while the sum is 33.

The square root of 8755521 is about 2958.9729637156. The cubic root of 8755521 is about 206.1075960994.

The spelling of 8755521 in words is "eight million, seven hundred fifty-five thousand, five hundred twenty-one".