204422461 has 2 divisors, whose sum is σ = 204422462. Its totient is φ = 204422460.

The previous prime is 204422453. The next prime is 204422483. The reversal of 204422461 is 164224402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169494361 + 34928100 = 13019^2 + 5910^2 .

It is a cyclic number.

It is not a de Polignac number, because 204422461 - 2³ = 204422453 is a prime.

It is a super-2 number, since 2×204422461² = 83577085122593042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4422461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102211230 + 102211231.

It is an arithmetic number, because the mean of its divisors is an integer number (102211231).

Almost surely, 2^204422461 is an apocalyptic number.

It is an amenable number.

204422461 is a deficient number, since it is larger than the sum of its proper divisors (1).

204422461 is an equidigital number, since it uses as much as digits as its factorization.

204422461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 204422461 is about 14297.6383014818. The cubic root of 204422461 is about 589.0826124103.

Adding to 204422461 its reverse (164224402), we get a palindrome (368646863).

The spelling of 204422461 in words is "two hundred four million, four hundred twenty-two thousand, four hundred sixty-one".