220405147 has 2 divisors, whose sum is σ = 220405148. Its totient is φ = 220405146.

The previous prime is 220405117. The next prime is 220405151. The reversal of 220405147 is 741504022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220405147 - 2⁷ = 220405019 is a prime.

It is not a weakly prime, because it can be changed into another prime (220405117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110202573 + 110202574.

It is an arithmetic number, because the mean of its divisors is an integer number (110202574).

Almost surely, 2^220405147 is an apocalyptic number.

220405147 is a deficient number, since it is larger than the sum of its proper divisors (1).

220405147 is an equidigital number, since it uses as much as digits as its factorization.

220405147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 220405147 is about 14846.0481947217. The cubic root of 220405147 is about 604.0514215464.

Adding to 220405147 its reverse (741504022), we get a palindrome (961909169).

The spelling of 220405147 in words is "two hundred twenty million, four hundred five thousand, one hundred forty-seven".