184222561 has 2 divisors, whose sum is σ = 184222562. Its totient is φ = 184222560.

The previous prime is 184222513. The next prime is 184222573. The reversal of 184222561 is 165222481.

184222561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99121936 + 85100625 = 9956^2 + 9225^2 .

It is a cyclic number.

It is not a de Polignac number, because 184222561 - 2¹⁷ = 184091489 is a prime.

It is not a weakly prime, because it can be changed into another prime (184222261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92111280 + 92111281.

It is an arithmetic number, because the mean of its divisors is an integer number (92111281).

Almost surely, 2^184222561 is an apocalyptic number.

It is an amenable number.

184222561 is a deficient number, since it is larger than the sum of its proper divisors (1).

184222561 is an equidigital number, since it uses as much as digits as its factorization.

184222561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 31.

The square root of 184222561 is about 13572.8611943098. The cubic root of 184222561 is about 569.0026274404.

The spelling of 184222561 in words is "one hundred eighty-four million, two hundred twenty-two thousand, five hundred sixty-one".