89155221 has 8 divisors (see below), whose sum is σ = 120822624. Its totient is φ = 58462320.

The previous prime is 89155207. The next prime is 89155243. The reversal of 89155221 is 12255198.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89155221 - 2¹¹ = 89153173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89155271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243411 + ... + 243776.

It is an arithmetic number, because the mean of its divisors is an integer number (15102828).

Almost surely, 2^89155221 is an apocalyptic number.

It is an amenable number.

89155221 is a deficient number, since it is larger than the sum of its proper divisors (31667403).

89155221 is a wasteful number, since it uses less digits than its factorization.

89155221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487251.

The product of its digits is 7200, while the sum is 33.

The square root of 89155221 is about 9442.2042447725. The cubic root of 89155221 is about 446.7339176852.

The spelling of 89155221 in words is "eighty-nine million, one hundred fifty-five thousand, two hundred twenty-one".