89520221 has 4 divisors (see below), whose sum is σ = 102308832. Its totient is φ = 76731612.

The previous prime is 89520217. The next prime is 89520253. The reversal of 89520221 is 12202598.

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 89520221 - 2² = 89520217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89520271) 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, 6394295 + ... + 6394308.

It is an arithmetic number, because the mean of its divisors is an integer number (25577208).

Almost surely, 2^89520221 is an apocalyptic number.

It is an amenable number.

89520221 is a deficient number, since it is larger than the sum of its proper divisors (12788611).

89520221 is a wasteful number, since it uses less digits than its factorization.

89520221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12788610.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 89520221 is about 9461.5126169128. The cubic root of 89520221 is about 447.3427280428.

The spelling of 89520221 in words is "eighty-nine million, five hundred twenty thousand, two hundred twenty-one".