221539083 has 8 divisors (see below), whose sum is σ = 295891008. Its totient is φ = 147439944.

The previous prime is 221539081. The next prime is 221539093. The reversal of 221539083 is 380935122.

221539083 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221539083 - 2¹ = 221539081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221539081) 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, 61141 + ... + 64662.

It is an arithmetic number, because the mean of its divisors is an integer number (36986376).

Almost surely, 2^221539083 is an apocalyptic number.

221539083 is a deficient number, since it is larger than the sum of its proper divisors (74351925).

221539083 is a wasteful number, since it uses less digits than its factorization.

221539083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126393.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 221539083 is about 14884.1890272866. The cubic root of 221539083 is about 605.0855540054.

The spelling of 221539083 in words is "two hundred twenty-one million, five hundred thirty-nine thousand, eighty-three".