145500149 has 2 divisors, whose sum is σ = 145500150. Its totient is φ = 145500148.

The previous prime is 145500133. The next prime is 145500151. The reversal of 145500149 is 941005541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74822500 + 70677649 = 8650^2 + 8407^2 .

It is a cyclic number.

It is not a de Polignac number, because 145500149 - 2⁴ = 145500133 is a prime.

Together with 145500151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145500449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72750074 + 72750075.

It is an arithmetic number, because the mean of its divisors is an integer number (72750075).

Almost surely, 2^145500149 is an apocalyptic number.

It is an amenable number.

145500149 is a deficient number, since it is larger than the sum of its proper divisors (1).

145500149 is an equidigital number, since it uses as much as digits as its factorization.

145500149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 145500149 is about 12062.3442580619. The cubic root of 145500149 is about 525.9621346961.

The spelling of 145500149 in words is "one hundred forty-five million, five hundred thousand, one hundred forty-nine".