88021 has 8 divisors (see below), whose sum is σ = 95040. Its totient is φ = 81312.

The previous prime is 88019. The next prime is 88037. The reversal of 88021 is 12088.

It is a happy number.

88021 is nontrivially palindromic in base 2.

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

It is a cyclic number.

It is not a de Polignac number, because 88021 - 2¹ = 88019 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 88021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945 + ... + 1033.

It is an arithmetic number, because the mean of its divisors is an integer number (11880).

2⁸⁸⁰²¹ is an apocalyptic number.

It is an amenable number.

88021 is a deficient number, since it is larger than the sum of its proper divisors (7019).

88021 is a wasteful number, since it uses less digits than its factorization.

88021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 88021 is about 296.6833328652. The cubic root of 88021 is about 44.4831396801.

The spelling of 88021 in words is "eighty-eight thousand, twenty-one".