153240449 has 2 divisors, whose sum is σ = 153240450. Its totient is φ = 153240448.

The previous prime is 153240443. The next prime is 153240481. The reversal of 153240449 is 944042351.

It is an a-pointer prime, because the next prime (153240481) can be obtained adding 153240449 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136142224 + 17098225 = 11668^2 + 4135^2 .

It is a cyclic number.

It is not a de Polignac number, because 153240449 - 2¹² = 153236353 is a prime.

It is not a weakly prime, because it can be changed into another prime (153240443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76620224 + 76620225.

It is an arithmetic number, because the mean of its divisors is an integer number (76620225).

Almost surely, 2^153240449 is an apocalyptic number.

It is an amenable number.

153240449 is a deficient number, since it is larger than the sum of its proper divisors (1).

153240449 is an equidigital number, since it uses as much as digits as its factorization.

153240449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 153240449 is about 12379.0326358726. The cubic root of 153240449 is about 535.1281598228.

The spelling of 153240449 in words is "one hundred fifty-three million, two hundred forty thousand, four hundred forty-nine".