153944641 has 2 divisors, whose sum is σ = 153944642. Its totient is φ = 153944640.

The previous prime is 153944587. The next prime is 153944647. The reversal of 153944641 is 146449351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115455025 + 38489616 = 10745^2 + 6204^2 .

It is an emirp because it is prime and its reverse (146449351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 153944641 - 2⁷ = 153944513 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 153944641.

It is not a weakly prime, because it can be changed into another prime (153944647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76972320 + 76972321.

It is an arithmetic number, because the mean of its divisors is an integer number (76972321).

Almost surely, 2^153944641 is an apocalyptic number.

It is an amenable number.

153944641 is a deficient number, since it is larger than the sum of its proper divisors (1).

153944641 is an equidigital number, since it uses as much as digits as its factorization.

153944641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 153944641 is about 12407.4429678318. The cubic root of 153944641 is about 535.9466060740.

The spelling of 153944641 in words is "one hundred fifty-three million, nine hundred forty-four thousand, six hundred forty-one".