11543109 has 8 divisors (see below), whose sum is σ = 15607872. Its totient is φ = 7586880.

The previous prime is 11543101. The next prime is 11543113. The reversal of 11543109 is 90134511.

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

It is not a de Polignac number, because 11543109 - 2³ = 11543101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543101) 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, 26884 + ... + 27309.

It is an arithmetic number, because the mean of its divisors is an integer number (1950984).

Almost surely, 2^11543109 is an apocalyptic number.

It is an amenable number.

11543109 is a deficient number, since it is larger than the sum of its proper divisors (4064763).

11543109 is an equidigital number, since it uses as much as digits as its factorization.

11543109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54267.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 11543109 is about 3397.5151213792. The cubic root of 11543109 is about 225.9995627423. Note that the first 3 decimals are identical.

The spelling of 11543109 in words is "eleven million, five hundred forty-three thousand, one hundred nine".