13481145 has 24 divisors (see below), whose sum is σ = 23914176. Its totient is φ = 7021728.

The previous prime is 13481141. The next prime is 13481161. The reversal of 13481145 is 54118431.

It is a happy number.

It is not a de Polignac number, because 13481145 - 2² = 13481141 is a prime.

It is a super-2 number, since 2×13481145² = 363482541022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13481141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1549 + ... + 5418.

It is an arithmetic number, because the mean of its divisors is an integer number (996424).

Almost surely, 2^13481145 is an apocalyptic number.

13481145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13481145 is a deficient number, since it is larger than the sum of its proper divisors (10433031).

13481145 is a wasteful number, since it uses less digits than its factorization.

13481145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7021 (or 7018 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 13481145 is about 3671.6678771370. The cubic root of 13481145 is about 237.9992526399. Note that the first 3 decimals are identical.

Adding to 13481145 its reverse (54118431), we get a palindrome (67599576).

The spelling of 13481145 in words is "thirteen million, four hundred eighty-one thousand, one hundred forty-five".