13331445 has 32 divisors (see below), whose sum is σ = 23241600. Its totient is φ = 6499584.

The previous prime is 13331441. The next prime is 13331447. The reversal of 13331445 is 54413331.

It is a happy number.

It is not a de Polignac number, because 13331445 - 2² = 13331441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13331441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7459 + ... + 9071.

It is an arithmetic number, because the mean of its divisors is an integer number (726300).

Almost surely, 2^13331445 is an apocalyptic number.

13331445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13331445 is a deficient number, since it is larger than the sum of its proper divisors (9910155).

13331445 is a wasteful number, since it uses less digits than its factorization.

13331445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669.

The product of its digits is 2160, while the sum is 24.

The square root of 13331445 is about 3651.2251368548. The cubic root of 13331445 is about 237.1150254372.

Adding to 13331445 its reverse (54413331), we get a palindrome (67744776).

The spelling of 13331445 in words is "thirteen million, three hundred thirty-one thousand, four hundred forty-five".