13163551 has 4 divisors (see below), whose sum is σ = 13322232. Its totient is φ = 13004872.

The previous prime is 13163537. The next prime is 13163573. The reversal of 13163551 is 15536131.

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 13163551 - 2¹¹ = 13161503 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 (13163851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79216 + ... + 79381.

It is an arithmetic number, because the mean of its divisors is an integer number (3330558).

Almost surely, 2^13163551 is an apocalyptic number.

13163551 is a deficient number, since it is larger than the sum of its proper divisors (158681).

13163551 is an equidigital number, since it uses as much as digits as its factorization.

13163551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158680.

The product of its digits is 1350, while the sum is 25.

The square root of 13163551 is about 3628.1608288498. The cubic root of 13163551 is about 236.1154216125.

Adding to 13163551 its reverse (15536131), we get a palindrome (28699682).

The spelling of 13163551 in words is "thirteen million, one hundred sixty-three thousand, five hundred fifty-one".