13133445 has 32 divisors (see below), whose sum is σ = 23127552. Its totient is φ = 6323712.

The previous prime is 13133423. The next prime is 13133467. The reversal of 13133445 is 54433131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13133423) and next prime (13133467).

It is not a de Polignac number, because 13133445 - 2¹² = 13129349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8449 + ... + 9881.

It is an arithmetic number, because the mean of its divisors is an integer number (722736).

Almost surely, 2^13133445 is an apocalyptic number.

13133445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13133445 is a deficient number, since it is larger than the sum of its proper divisors (9994107).

13133445 is a wasteful number, since it uses less digits than its factorization.

13133445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501.

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

The square root of 13133445 is about 3624.0095198550. The cubic root of 13133445 is about 235.9352798206.

Adding to 13133445 its reverse (54433131), we get a palindrome (67566576).

The spelling of 13133445 in words is "thirteen million, one hundred thirty-three thousand, four hundred forty-five".