88284221 has 4 divisors (see below), whose sum is σ = 88340700. Its totient is φ = 88227744.

The previous prime is 88284197. The next prime is 88284239. The reversal of 88284221 is 12248288.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51681721 + 36602500 = 7189^2 + 6050^2 .

It is a cyclic number.

It is not a de Polignac number, because 88284221 - 2²² = 84089917 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 (88284271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25826 + ... + 29043.

It is an arithmetic number, because the mean of its divisors is an integer number (22085175).

Almost surely, 2^88284221 is an apocalyptic number.

It is an amenable number.

88284221 is a deficient number, since it is larger than the sum of its proper divisors (56479).

88284221 is a wasteful number, since it uses less digits than its factorization.

88284221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56478.

The product of its digits is 16384, while the sum is 35.

The square root of 88284221 is about 9395.9683375371. The cubic root of 88284221 is about 445.2743685277.

The spelling of 88284221 in words is "eighty-eight million, two hundred eighty-four thousand, two hundred twenty-one".