82021159 has 8 divisors (see below), whose sum is σ = 89871120. Its totient is φ = 74236800.

The previous prime is 82021123. The next prime is 82021169. The reversal of 82021159 is 95112028.

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

It is not a de Polignac number, because 82021159 - 2¹¹ = 82019111 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 (82021109) 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, 13762 + ... + 18799.

It is an arithmetic number, because the mean of its divisors is an integer number (11233890).

Almost surely, 2^82021159 is an apocalyptic number.

82021159 is a deficient number, since it is larger than the sum of its proper divisors (7849961).

82021159 is a wasteful number, since it uses less digits than its factorization.

82021159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32801.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 82021159 is about 9056.5533731105. The cubic root of 82021159 is about 434.4855132022.

The spelling of 82021159 in words is "eighty-two million, twenty-one thousand, one hundred fifty-nine".