11553445 has 4 divisors (see below), whose sum is σ = 13864140. Its totient is φ = 9242752.

The previous prime is 11553433. The next prime is 11553449. The reversal of 11553445 is 54435511.

11553445 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9138529 + 2414916 = 3023^2 + 1554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11553445 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11553449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155340 + ... + 1155349.

It is an arithmetic number, because the mean of its divisors is an integer number (3466035).

Almost surely, 2^11553445 is an apocalyptic number.

It is an amenable number.

11553445 is a deficient number, since it is larger than the sum of its proper divisors (2310695).

11553445 is an equidigital number, since it uses as much as digits as its factorization.

11553445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310694.

The product of its digits is 6000, while the sum is 28.

The square root of 11553445 is about 3399.0358927202. The cubic root of 11553445 is about 226.0669979139.

Adding to 11553445 its reverse (54435511), we get a palindrome (65988956).

The spelling of 11553445 in words is "eleven million, five hundred fifty-three thousand, four hundred forty-five".