163364551 has 4 divisors (see below), whose sum is σ = 186702352. Its totient is φ = 140026752.

The previous prime is 163364549. The next prime is 163364563. The reversal of 163364551 is 155463361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163364551 - 2¹ = 163364549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163364521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11668890 + ... + 11668903.

It is an arithmetic number, because the mean of its divisors is an integer number (46675588).

Almost surely, 2^163364551 is an apocalyptic number.

163364551 is a deficient number, since it is larger than the sum of its proper divisors (23337801).

163364551 is an equidigital number, since it uses as much as digits as its factorization.

163364551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23337800.

The product of its digits is 32400, while the sum is 34.

The square root of 163364551 is about 12781.4142801178. The cubic root of 163364551 is about 546.6624891032.

The spelling of 163364551 in words is "one hundred sixty-three million, three hundred sixty-four thousand, five hundred fifty-one".