163505047 has 2 divisors, whose sum is σ = 163505048. Its totient is φ = 163505046.

The previous prime is 163505029. The next prime is 163505059. The reversal of 163505047 is 740505361.

It is a strong prime.

It is an emirp because it is prime and its reverse (740505361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163505047 - 2¹⁵ = 163472279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163505077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81752523 + 81752524.

It is an arithmetic number, because the mean of its divisors is an integer number (81752524).

Almost surely, 2^163505047 is an apocalyptic number.

163505047 is a deficient number, since it is larger than the sum of its proper divisors (1).

163505047 is an equidigital number, since it uses as much as digits as its factorization.

163505047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 163505047 is about 12786.9092043386. The cubic root of 163505047 is about 546.8191568862.

The spelling of 163505047 in words is "one hundred sixty-three million, five hundred five thousand, forty-seven".