11520541 has 4 divisors (see below), whose sum is σ = 11537500. Its totient is φ = 11503584.

The previous prime is 11520473. The next prime is 11520559. The reversal of 11520541 is 14502511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14502511 = 127 ⋅114193.

It can be written as a sum of positive squares in 2 ways, for example, as 3980025 + 7540516 = 1995^2 + 2746^2 .

It is a cyclic number.

It is not a de Polignac number, because 11520541 - 2¹⁹ = 10996253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520571) 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, 7416 + ... + 8833.

It is an arithmetic number, because the mean of its divisors is an integer number (2884375).

Almost surely, 2^11520541 is an apocalyptic number.

It is an amenable number.

11520541 is a deficient number, since it is larger than the sum of its proper divisors (16959).

11520541 is an equidigital number, since it uses as much as digits as its factorization.

11520541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16958.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 11520541 is about 3394.1922455866. The cubic root of 11520541 is about 225.8521822962.

The spelling of 11520541 in words is "eleven million, five hundred twenty thousand, five hundred forty-one".