156109 has 2 divisors, whose sum is σ = 156110. Its totient is φ = 156108.

The previous prime is 156089. The next prime is 156119. The reversal of 156109 is 901651.

156109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142884 + 13225 = 378^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 156109 - 2¹¹ = 154061 is a prime.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 156109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78054 + 78055.

It is an arithmetic number, because the mean of its divisors is an integer number (78055).

2¹⁵⁶¹⁰⁹ is an apocalyptic number.

It is an amenable number.

156109 is a deficient number, since it is larger than the sum of its proper divisors (1).

156109 is an equidigital number, since it uses as much as digits as its factorization.

156109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 156109 is about 395.1063148065. The cubic root of 156109 is about 53.8446610261.

The spelling of 156109 in words is "one hundred fifty-six thousand, one hundred nine".