13161226 has 8 divisors (see below), whose sum is σ = 21260484. Its totient is φ = 6074400.

The previous prime is 13161193. The next prime is 13161229. The reversal of 13161226 is 62216131.

It can be written as a sum of positive squares in 2 ways, for example, as 11895601 + 1265625 = 3449^2 + 1125^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13161197 and 13161206.

It is not an unprimeable number, because it can be changed into a prime (13161229) 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, 253075 + ... + 253126.

Almost surely, 2^13161226 is an apocalyptic number.

13161226 is a deficient number, since it is larger than the sum of its proper divisors (8099258).

13161226 is a wasteful number, since it uses less digits than its factorization.

13161226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506216.

The product of its digits is 432, while the sum is 22.

The square root of 13161226 is about 3627.8404044280. The cubic root of 13161226 is about 236.1015195714.

Adding to 13161226 its reverse (62216131), we get a palindrome (75377357).

The spelling of 13161226 in words is "thirteen million, one hundred sixty-one thousand, two hundred twenty-six".