11280541 has 4 divisors (see below), whose sum is σ = 11366784. Its totient is φ = 11194300.

The previous prime is 11280527. The next prime is 11280569. The reversal of 11280541 is 14508211.

11280541 = 226² + 227² + ... + 356².

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.

It is a cyclic number.

It is not a de Polignac number, because 11280541 - 2⁷ = 11280413 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11280041) 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, 42925 + ... + 43186.

It is an arithmetic number, because the mean of its divisors is an integer number (2841696).

Almost surely, 2^11280541 is an apocalyptic number.

It is an amenable number.

11280541 is a deficient number, since it is larger than the sum of its proper divisors (86243).

11280541 is an equidigital number, since it uses as much as digits as its factorization.

11280541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86242.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 11280541 is about 3358.6516639866. The cubic root of 11280541 is about 224.2728194252.

Adding to 11280541 its reverse (14508211), we get a palindrome (25788752).

The spelling of 11280541 in words is "eleven million, two hundred eighty thousand, five hundred forty-one".