155796169 has 2 divisors, whose sum is σ = 155796170. Its totient is φ = 155796168.

The previous prime is 155796163. The next prime is 155796209. The reversal of 155796169 is 961697551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140114569 + 15681600 = 11837^2 + 3960^2 .

It is a cyclic number.

It is not a de Polignac number, because 155796169 - 2¹⁹ = 155271881 is a prime.

It is a super-2 number, since 2×155796169² = 48544892550153122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155796163) 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, 77898084 + 77898085.

It is an arithmetic number, because the mean of its divisors is an integer number (77898085).

Almost surely, 2^155796169 is an apocalyptic number.

It is an amenable number.

155796169 is a deficient number, since it is larger than the sum of its proper divisors (1).

155796169 is an equidigital number, since it uses as much as digits as its factorization.

155796169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 510300, while the sum is 49.

The square root of 155796169 is about 12481.8335592172. The cubic root of 155796169 is about 538.0867005557.

The spelling of 155796169 in words is "one hundred fifty-five million, seven hundred ninety-six thousand, one hundred sixty-nine".