145435309 has 2 divisors, whose sum is σ = 145435310. Its totient is φ = 145435308.

The previous prime is 145435259. The next prime is 145435333. The reversal of 145435309 is 903534541.

145435309 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., 119902500 + 25532809 = 10950^2 + 5053^2 .

It is a cyclic number.

It is not a de Polignac number, because 145435309 - 2¹⁵ = 145402541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145435399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72717654 + 72717655.

It is an arithmetic number, because the mean of its divisors is an integer number (72717655).

Almost surely, 2^145435309 is an apocalyptic number.

It is an amenable number.

145435309 is a deficient number, since it is larger than the sum of its proper divisors (1).

145435309 is an equidigital number, since it uses as much as digits as its factorization.

145435309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 145435309 is about 12059.6562554660. The cubic root of 145435309 is about 525.8839939927.

It can be divided in two parts, 1454 and 35309, that added together give a palindrome (36763).

The spelling of 145435309 in words is "one hundred forty-five million, four hundred thirty-five thousand, three hundred nine".