15440145 has 32 divisors (see below), whose sum is σ = 28819200. Its totient is φ = 7056000.

The previous prime is 15440143. The next prime is 15440167. The reversal of 15440145 is 54104451.

It is a happy number.

15440145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15440145 - 2¹ = 15440143 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (15440143) 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, 3645 + ... + 6645.

It is an arithmetic number, because the mean of its divisors is an integer number (900600).

Almost surely, 2^15440145 is an apocalyptic number.

15440145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15440145 is a deficient number, since it is larger than the sum of its proper divisors (13379055).

15440145 is an equidigital number, since it uses as much as digits as its factorization.

15440145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030 (or 3016 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 15440145 is about 3929.3949915986. The cubic root of 15440145 is about 249.0101929667.

Adding to 15440145 its reverse (54104451), we get a palindrome (69544596).

The spelling of 15440145 in words is "fifteen million, four hundred forty thousand, one hundred forty-five".