145151609 has 2 divisors, whose sum is σ = 145151610. Its totient is φ = 145151608.

The previous prime is 145151581. The next prime is 145151647. The reversal of 145151609 is 906151541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120121600 + 25030009 = 10960^2 + 5003^2 .

It is a cyclic number.

It is not a de Polignac number, because 145151609 - 2⁸ = 145151353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145151009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72575804 + 72575805.

It is an arithmetic number, because the mean of its divisors is an integer number (72575805).

Almost surely, 2^145151609 is an apocalyptic number.

It is an amenable number.

145151609 is a deficient number, since it is larger than the sum of its proper divisors (1).

145151609 is an equidigital number, since it uses as much as digits as its factorization.

145151609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 145151609 is about 12047.8881551913. Note that the first 3 decimals coincide. The cubic root of 145151609 is about 525.5418248968.

The spelling of 145151609 in words is "one hundred forty-five million, one hundred fifty-one thousand, six hundred nine".