145191337 has 2 divisors, whose sum is σ = 145191338. Its totient is φ = 145191336.

The previous prime is 145191323. The next prime is 145191377. The reversal of 145191337 is 733191541.

It is a happy number.

145191337 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144865296 + 326041 = 12036^2 + 571^2 .

It is an emirp because it is prime and its reverse (733191541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145191337 - 2¹⁵ = 145158569 is a prime.

It is not a weakly prime, because it can be changed into another prime (145191377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72595668 + 72595669.

It is an arithmetic number, because the mean of its divisors is an integer number (72595669).

Almost surely, 2^145191337 is an apocalyptic number.

It is an amenable number.

145191337 is a deficient number, since it is larger than the sum of its proper divisors (1).

145191337 is an equidigital number, since it uses as much as digits as its factorization.

145191337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 34.

The square root of 145191337 is about 12049.5367960764. The cubic root of 145191337 is about 525.5897674612.

The spelling of 145191337 in words is "one hundred forty-five million, one hundred ninety-one thousand, three hundred thirty-seven".