145936289 has 2 divisors, whose sum is σ = 145936290. Its totient is φ = 145936288.

The previous prime is 145936253. The next prime is 145936303. The reversal of 145936289 is 982639541.

145936289 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., 118635664 + 27300625 = 10892^2 + 5225^2 .

It is a cyclic number.

It is not a de Polignac number, because 145936289 - 2²⁰ = 144887713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145936229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72968144 + 72968145.

It is an arithmetic number, because the mean of its divisors is an integer number (72968145).

Almost surely, 2^145936289 is an apocalyptic number.

It is an amenable number.

145936289 is a deficient number, since it is larger than the sum of its proper divisors (1).

145936289 is an equidigital number, since it uses as much as digits as its factorization.

145936289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 47.

The square root of 145936289 is about 12080.4093059797. The cubic root of 145936289 is about 526.4871382883.

The spelling of 145936289 in words is "one hundred forty-five million, nine hundred thirty-six thousand, two hundred eighty-nine".