170556049 has 2 divisors, whose sum is σ = 170556050. Its totient is φ = 170556048.

The previous prime is 170556013. The next prime is 170556059. The reversal of 170556049 is 940655071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168169024 + 2387025 = 12968^2 + 1545^2 .

It is a cyclic number.

It is not a de Polignac number, because 170556049 - 2¹⁷ = 170424977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 170555999 and 170556017.

It is not a weakly prime, because it can be changed into another prime (170556059) 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, 85278024 + 85278025.

It is an arithmetic number, because the mean of its divisors is an integer number (85278025).

Almost surely, 2^170556049 is an apocalyptic number.

It is an amenable number.

170556049 is a deficient number, since it is larger than the sum of its proper divisors (1).

170556049 is an equidigital number, since it uses as much as digits as its factorization.

170556049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 170556049 is about 13059.7109079795. The cubic root of 170556049 is about 554.5691529447.

It can be divided in two parts, 17055 and 6049, that added together give a square (23104 = 152²).

The spelling of 170556049 in words is "one hundred seventy million, five hundred fifty-six thousand, forty-nine".