11553043 has 4 divisors (see below), whose sum is σ = 11573848. Its totient is φ = 11532240.

The previous prime is 11553041. The next prime is 11553067. The reversal of 11553043 is 34035511.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11553043 - 2¹ = 11553041 is a prime.

It is a super-3 number, since 3×11553043³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11553041) 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, 9546 + ... + 10687.

It is an arithmetic number, because the mean of its divisors is an integer number (2893462).

Almost surely, 2^11553043 is an apocalyptic number.

11553043 is a deficient number, since it is larger than the sum of its proper divisors (20805).

11553043 is an equidigital number, since it uses as much as digits as its factorization.

11553043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20804.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 11553043 is about 3398.9767577905. The cubic root of 11553043 is about 226.0643758969.

Adding to 11553043 its reverse (34035511), we get a palindrome (45588554).

The spelling of 11553043 in words is "eleven million, five hundred fifty-three thousand, forty-three".