170220049 has 2 divisors, whose sum is σ = 170220050. Its totient is φ = 170220048.

The previous prime is 170219989. The next prime is 170220067. The reversal of 170220049 is 940022071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150798400 + 19421649 = 12280^2 + 4407^2 .

It is a cyclic number.

It is not a de Polignac number, because 170220049 - 2¹¹ = 170218001 is a prime.

It is not a weakly prime, because it can be changed into another prime (170224049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85110024 + 85110025.

It is an arithmetic number, because the mean of its divisors is an integer number (85110025).

Almost surely, 2^170220049 is an apocalyptic number.

It is an amenable number.

170220049 is a deficient number, since it is larger than the sum of its proper divisors (1).

170220049 is an equidigital number, since it uses as much as digits as its factorization.

170220049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 170220049 is about 13046.8405754037. The cubic root of 170220049 is about 554.2047414949.

The spelling of 170220049 in words is "one hundred seventy million, two hundred twenty thousand, forty-nine".