145345169 has 2 divisors, whose sum is σ = 145345170. Its totient is φ = 145345168.

The previous prime is 145345153. The next prime is 145345183. The reversal of 145345169 is 961543541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126855169 + 18490000 = 11263^2 + 4300^2 .

It is a cyclic number.

It is not a de Polignac number, because 145345169 - 2⁴ = 145345153 is a prime.

It is a super-2 number, since 2×145345169² = 42250436303277122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145345469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72672584 + 72672585.

It is an arithmetic number, because the mean of its divisors is an integer number (72672585).

Almost surely, 2^145345169 is an apocalyptic number.

It is an amenable number.

145345169 is a deficient number, since it is larger than the sum of its proper divisors (1).

145345169 is an equidigital number, since it uses as much as digits as its factorization.

145345169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 38.

The square root of 145345169 is about 12055.9184220863. The cubic root of 145345169 is about 525.7753248753.

The spelling of 145345169 in words is "one hundred forty-five million, three hundred forty-five thousand, one hundred sixty-nine".