221164583 has 2 divisors, whose sum is σ = 221164584. Its totient is φ = 221164582.

The previous prime is 221164561. The next prime is 221164621. The reversal of 221164583 is 385461122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221164583 - 2¹⁴ = 221148199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221164553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110582291 + 110582292.

It is an arithmetic number, because the mean of its divisors is an integer number (110582292).

Almost surely, 2^221164583 is an apocalyptic number.

221164583 is a deficient number, since it is larger than the sum of its proper divisors (1).

221164583 is an equidigital number, since it uses as much as digits as its factorization.

221164583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 32.

The square root of 221164583 is about 14871.6032424214. The cubic root of 221164583 is about 604.7444067541.

The spelling of 221164583 in words is "two hundred twenty-one million, one hundred sixty-four thousand, five hundred eighty-three".