153540641 has 2 divisors, whose sum is σ = 153540642. Its totient is φ = 153540640.

The previous prime is 153540637. The next prime is 153540643. The reversal of 153540641 is 146045351.

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., 144961600 + 8579041 = 12040^2 + 2929^2 .

It is a cyclic number.

It is not a de Polignac number, because 153540641 - 2² = 153540637 is a prime.

It is a Sophie Germain prime.

Together with 153540643, 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 (153540643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76770320 + 76770321.

It is an arithmetic number, because the mean of its divisors is an integer number (76770321).

Almost surely, 2^153540641 is an apocalyptic number.

It is an amenable number.

153540641 is a deficient number, since it is larger than the sum of its proper divisors (1).

153540641 is an equidigital number, since it uses as much as digits as its factorization.

153540641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 153540641 is about 12391.1517220959. The cubic root of 153540641 is about 535.4773635547.

Adding to 153540641 its reverse (146045351), we get a palindrome (299585992).

The spelling of 153540641 in words is "one hundred fifty-three million, five hundred forty thousand, six hundred forty-one".