13223554 has 4 divisors (see below), whose sum is σ = 19835334. Its totient is φ = 6611776.

The previous prime is 13223549. The next prime is 13223557. The reversal of 13223554 is 45532231.

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

It can be written as a sum of positive squares in only one way, i.e., 12996025 + 227529 = 3605^2 + 477^2 .

It is not an unprimeable number, because it can be changed into a prime (13223557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305887 + ... + 3305890.

Almost surely, 2^13223554 is an apocalyptic number.

13223554 is a deficient number, since it is larger than the sum of its proper divisors (6611780).

13223554 is an equidigital number, since it uses as much as digits as its factorization.

13223554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6611779.

The product of its digits is 3600, while the sum is 25.

The square root of 13223554 is about 3636.4204927373. The cubic root of 13223554 is about 236.4736370455.

Adding to 13223554 its reverse (45532231), we get a palindrome (58755785).

The spelling of 13223554 in words is "thirteen million, two hundred twenty-three thousand, five hundred fifty-four".