145000169 has 2 divisors, whose sum is σ = 145000170. Its totient is φ = 145000168.

The previous prime is 145000117. The next prime is 145000183. The reversal of 145000169 is 961000541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92871769 + 52128400 = 9637^2 + 7220^2 .

It is an emirp because it is prime and its reverse (961000541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145000169 - 2²⁰ = 143951593 is a prime.

It is a super-2 number, since 2×145000169² = 42050098020057122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145000199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72500084 + 72500085.

It is an arithmetic number, because the mean of its divisors is an integer number (72500085).

Almost surely, 2^145000169 is an apocalyptic number.

It is an amenable number.

145000169 is a deficient number, since it is larger than the sum of its proper divisors (1).

145000169 is an equidigital number, since it uses as much as digits as its factorization.

145000169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 145000169 is about 12041.6015961333. The cubic root of 145000169 is about 525.3589913541.

The spelling of 145000169 in words is "one hundred forty-five million, one hundred sixty-nine", and thus it is an aban number.