163523441 has 2 divisors, whose sum is σ = 163523442. Its totient is φ = 163523440.

The previous prime is 163523429. The next prime is 163523449. The reversal of 163523441 is 144325361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121000000 + 42523441 = 11000^2 + 6521^2 .

It is an emirp because it is prime and its reverse (144325361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163523441 - 2⁶ = 163523377 is a prime.

It is not a weakly prime, because it can be changed into another prime (163523449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81761720 + 81761721.

It is an arithmetic number, because the mean of its divisors is an integer number (81761721).

Almost surely, 2^163523441 is an apocalyptic number.

It is an amenable number.

163523441 is a deficient number, since it is larger than the sum of its proper divisors (1).

163523441 is an equidigital number, since it uses as much as digits as its factorization.

163523441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 163523441 is about 12787.6284353276. The cubic root of 163523441 is about 546.8396614814.

The spelling of 163523441 in words is "one hundred sixty-three million, five hundred twenty-three thousand, four hundred forty-one".