163403057 has 2 divisors, whose sum is σ = 163403058. Its totient is φ = 163403056.

The previous prime is 163403041. The next prime is 163403069. The reversal of 163403057 is 750304361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84566416 + 78836641 = 9196^2 + 8879^2 .

It is an emirp because it is prime and its reverse (750304361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163403057 - 2⁴ = 163403041 is a prime.

It is a Chen prime.

It is equal to p_9154541 and since 163403057 and 9154541 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (163403957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81701528 + 81701529.

It is an arithmetic number, because the mean of its divisors is an integer number (81701529).

Almost surely, 2^163403057 is an apocalyptic number.

It is an amenable number.

163403057 is a deficient number, since it is larger than the sum of its proper divisors (1).

163403057 is an equidigital number, since it uses as much as digits as its factorization.

163403057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 163403057 is about 12782.9205191928. The cubic root of 163403057 is about 546.7054362665.

The spelling of 163403057 in words is "one hundred sixty-three million, four hundred three thousand, fifty-seven".