149173 has 2 divisors, whose sum is σ = 149174. Its totient is φ = 149172.

The previous prime is 149161. The next prime is 149183. The reversal of 149173 is 371941.

149173 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., 145924 + 3249 = 382^2 + 57^2 .

It is an emirp because it is prime and its reverse (371941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149173 is a prime.

149173 is a lucky number.

It is equal to p₁₃₇₇₇ and since 149173 and 13777 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74586 + 74587.

It is an arithmetic number, because the mean of its divisors is an integer number (74587).

2¹⁴⁹¹⁷³ is an apocalyptic number.

It is an amenable number.

149173 is a deficient number, since it is larger than the sum of its proper divisors (1).

149173 is an equidigital number, since it uses as much as digits as its factorization.

149173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 25.

The square root of 149173 is about 386.2292065600. The cubic root of 149173 is about 53.0351019397.

The spelling of 149173 in words is "one hundred forty-nine thousand, one hundred seventy-three".