12440553 has 8 divisors (see below), whose sum is σ = 16629600. Its totient is φ = 8272608.

The previous prime is 12440551. The next prime is 12440557. The reversal of 12440553 is 35504421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12440553 - 2¹ = 12440551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12440551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3843 + ... + 6296.

It is an arithmetic number, because the mean of its divisors is an integer number (2078700).

Almost surely, 2^12440553 is an apocalyptic number.

It is an amenable number.

12440553 is a deficient number, since it is larger than the sum of its proper divisors (4189047).

12440553 is a wasteful number, since it uses less digits than its factorization.

12440553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 12440553 is about 3527.1168112213. The cubic root of 12440553 is about 231.7109522041.

Adding to 12440553 its reverse (35504421), we get a palindrome (47944974).

The spelling of 12440553 in words is "twelve million, four hundred forty thousand, five hundred fifty-three".