145054409 has 2 divisors, whose sum is σ = 145054410. Its totient is φ = 145054408.

The previous prime is 145054373. The next prime is 145054453. The reversal of 145054409 is 904450541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90250000 + 54804409 = 9500^2 + 7403^2 .

It is a cyclic number.

It is not a de Polignac number, because 145054409 - 2⁸ = 145054153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145054499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72527204 + 72527205.

It is an arithmetic number, because the mean of its divisors is an integer number (72527205).

Almost surely, 2^145054409 is an apocalyptic number.

It is an amenable number.

145054409 is a deficient number, since it is larger than the sum of its proper divisors (1).

145054409 is an equidigital number, since it uses as much as digits as its factorization.

145054409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 145054409 is about 12043.8535776553. The cubic root of 145054409 is about 525.4244899429.

The spelling of 145054409 in words is "one hundred forty-five million, fifty-four thousand, four hundred nine".