11043541 has 4 divisors (see below), whose sum is σ = 11624800. Its totient is φ = 10462284.

The previous prime is 11043517. The next prime is 11043551. The reversal of 11043541 is 14534011.

11043541 = 253² + 254² + ... + 366².

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14534011 = 1163 ⋅12497.

It is a cyclic number.

It is not a de Polignac number, because 11043541 - 2⁹ = 11043029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 581239 = 11043541 / (1 + 1 + 0 + 4 + 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 (11043511) 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, 290601 + ... + 290638.

It is an arithmetic number, because the mean of its divisors is an integer number (2906200).

Almost surely, 2^11043541 is an apocalyptic number.

It is an amenable number.

11043541 is a deficient number, since it is larger than the sum of its proper divisors (581259).

11043541 is an equidigital number, since it uses as much as digits as its factorization.

11043541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581258.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 11043541 is about 3323.1823603287. The cubic root of 11043541 is about 222.6910600624.

Adding to 11043541 its reverse (14534011), we get a palindrome (25577552).

The spelling of 11043541 in words is "eleven million, forty-three thousand, five hundred forty-one".