11153541 has 8 divisors (see below), whose sum is σ = 16995904. Its totient is φ = 6373440.

The previous prime is 11153533. The next prime is 11153563. The reversal of 11153541 is 14535111.

It is a happy number.

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

It is not a de Polignac number, because 11153541 - 2³ = 11153533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 531121 = 11153541 / (1 + 1 + 1 + 5 + 3 + 5 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11153501) 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, 265540 + ... + 265581.

It is an arithmetic number, because the mean of its divisors is an integer number (2124488).

Almost surely, 2^11153541 is an apocalyptic number.

It is an amenable number.

11153541 is a deficient number, since it is larger than the sum of its proper divisors (5842363).

11153541 is an equidigital number, since it uses as much as digits as its factorization.

11153541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531131.

The product of its digits is 300, while the sum is 21.

The square root of 11153541 is about 3339.6917522430. The cubic root of 11153541 is about 223.4279955629.

Adding to 11153541 its reverse (14535111), we get a palindrome (25688652).

It can be divided in two parts, 1115 and 3541, that added together give a triangular number (4656 = T₉₆).

The spelling of 11153541 in words is "eleven million, one hundred fifty-three thousand, five hundred forty-one".