11145541 has 8 divisors (see below), whose sum is σ = 12578400. Its totient is φ = 9782640.

The previous prime is 11145539. The next prime is 11145551. The reversal of 11145541 is 14554111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11145541 - 2¹ = 11145539 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 (11145521) 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, 17151 + ... + 17788.

It is an arithmetic number, because the mean of its divisors is an integer number (1572300).

Almost surely, 2^11145541 is an apocalyptic number.

11145541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11145541 is the 1785-th centered heptagonal number.

It is an amenable number.

11145541 is a deficient number, since it is larger than the sum of its proper divisors (1432859).

11145541 is a wasteful number, since it uses less digits than its factorization.

11145541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34979.

The product of its digits is 400, while the sum is 22.

The square root of 11145541 is about 3338.4938220701. The cubic root of 11145541 is about 223.3745640567.

Adding to 11145541 its reverse (14554111), we get a palindrome (25699652).

The spelling of 11145541 in words is "eleven million, one hundred forty-five thousand, five hundred forty-one".