155152169 has 2 divisors, whose sum is σ = 155152170. Its totient is φ = 155152168.

The previous prime is 155152133. The next prime is 155152171. The reversal of 155152169 is 961251551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148962025 + 6190144 = 12205^2 + 2488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155152169 is a prime.

It is a super-2 number, since 2×155152169² = 48144391090809122, which contains 22 as substring.

Together with 155152171, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_8717642 and since 155152169 and 8717642 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (155152199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77576084 + 77576085.

It is an arithmetic number, because the mean of its divisors is an integer number (77576085).

Almost surely, 2^155152169 is an apocalyptic number.

It is an amenable number.

155152169 is a deficient number, since it is larger than the sum of its proper divisors (1).

155152169 is an equidigital number, since it uses as much as digits as its factorization.

155152169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13500, while the sum is 35.

The square root of 155152169 is about 12456.0093529188. The cubic root of 155152169 is about 537.3442638048.

The spelling of 155152169 in words is "one hundred fifty-five million, one hundred fifty-two thousand, one hundred sixty-nine".