13333445 has 18 divisors (see below), whose sum is σ = 16964934. Its totient is φ = 10059280.

The previous prime is 13333433. The next prime is 13333499. The reversal of 13333445 is 54433331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 2666689 = 3266^2 + 1633^2 .

It is not a de Polignac number, because 13333445 - 2⁴ = 13333429 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 187760 + ... + 187830.

Almost surely, 2^13333445 is an apocalyptic number.

It is an amenable number.

13333445 is a deficient number, since it is larger than the sum of its proper divisors (3631489).

13333445 is an frugal number, since it uses more digits than its factorization.

13333445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 99 counting only the distinct ones).

The product of its digits is 6480, while the sum is 26.

The square root of 13333445 is about 3651.4990072572. The cubic root of 13333445 is about 237.1268822749.

Multiplying 13333445 by its product of digits (6480), we get a square (86400723600 = 293940²).

Adding to 13333445 its reverse (54433331), we get a palindrome (67766776).

The spelling of 13333445 in words is "thirteen million, three hundred thirty-three thousand, four hundred forty-five".