146184221 has 2 divisors, whose sum is σ = 146184222. Its totient is φ = 146184220.

The previous prime is 146184187. The next prime is 146184223. The reversal of 146184221 is 122481641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119661721 + 26522500 = 10939^2 + 5150^2 .

It is a cyclic number.

It is not a de Polignac number, because 146184221 - 2¹⁴ = 146167837 is a prime.

Together with 146184223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146184223) 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 as a sum of consecutive naturals, namely, 73092110 + 73092111.

It is an arithmetic number, because the mean of its divisors is an integer number (73092111).

Almost surely, 2^146184221 is an apocalyptic number.

It is an amenable number.

146184221 is a deficient number, since it is larger than the sum of its proper divisors (1).

146184221 is an equidigital number, since it uses as much as digits as its factorization.

146184221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 29.

The square root of 146184221 is about 12090.6666896412. Note that the first 4 decimals coincide. The cubic root of 146184221 is about 526.7851202791.

The spelling of 146184221 in words is "one hundred forty-six million, one hundred eighty-four thousand, two hundred twenty-one".