155052169 has 2 divisors, whose sum is σ = 155052170. Its totient is φ = 155052168.

The previous prime is 155052167. The next prime is 155052181. The reversal of 155052169 is 961250551.

155052169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134258569 + 20793600 = 11587^2 + 4560^2 .

It is a cyclic number.

It is not a de Polignac number, because 155052169 - 2¹ = 155052167 is a prime.

It is a super-2 number, since 2×155052169² = 48082350223209122, which contains 22 as substring.

Together with 155052167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (155052167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77526084 + 77526085.

It is an arithmetic number, because the mean of its divisors is an integer number (77526085).

Almost surely, 2^155052169 is an apocalyptic number.

It is an amenable number.

155052169 is a deficient number, since it is larger than the sum of its proper divisors (1).

155052169 is an equidigital number, since it uses as much as digits as its factorization.

155052169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 34.

The square root of 155052169 is about 12451.9945791829. The cubic root of 155052169 is about 537.2287944233.

The spelling of 155052169 in words is "one hundred fifty-five million, fifty-two thousand, one hundred sixty-nine".