146252609 has 2 divisors, whose sum is σ = 146252610. Its totient is φ = 146252608.

The previous prime is 146252593. The next prime is 146252611. The reversal of 146252609 is 906252641.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123832384 + 22420225 = 11128^2 + 4735^2 .

It is a cyclic number.

It is not a de Polignac number, because 146252609 - 2⁴ = 146252593 is a prime.

It is a Sophie Germain prime.

Together with 146252611, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (146252669) 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, 73126304 + 73126305.

It is an arithmetic number, because the mean of its divisors is an integer number (73126305).

Almost surely, 2^146252609 is an apocalyptic number.

It is an amenable number.

146252609 is a deficient number, since it is larger than the sum of its proper divisors (1).

146252609 is an equidigital number, since it uses as much as digits as its factorization.

146252609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 146252609 is about 12093.4944908409. The cubic root of 146252609 is about 526.8672544614.

The spelling of 146252609 in words is "one hundred forty-six million, two hundred fifty-two thousand, six hundred nine".