153216449 has 2 divisors, whose sum is σ = 153216450. Its totient is φ = 153216448.

The previous prime is 153216431. The next prime is 153216463. The reversal of 153216449 is 944612351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146289025 + 6927424 = 12095^2 + 2632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153216449 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (153216419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76608224 + 76608225.

It is an arithmetic number, because the mean of its divisors is an integer number (76608225).

Almost surely, 2^153216449 is an apocalyptic number.

It is an amenable number.

153216449 is a deficient number, since it is larger than the sum of its proper divisors (1).

153216449 is an equidigital number, since it uses as much as digits as its factorization.

153216449 is an evil number, because the sum of its binary digits is even.

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

The square root of 153216449 is about 12378.0632168365. The cubic root of 153216449 is about 535.1002217111.

The spelling of 153216449 in words is "one hundred fifty-three million, two hundred sixteen thousand, four hundred forty-nine".