11139543 has 6 divisors (see below), whose sum is σ = 16090464. Its totient is φ = 7426356.

The previous prime is 11139533. The next prime is 11139563. The reversal of 11139543 is 34593111.

11139543 is a `hidden beast` number, since 1 + 113 + 9 + 543 = 666.

It is not a de Polignac number, because 11139543 - 2⁵ = 11139511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11139503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 618855 + ... + 618872.

It is an arithmetic number, because the mean of its divisors is an integer number (2681744).

Almost surely, 2^11139543 is an apocalyptic number.

11139543 is a deficient number, since it is larger than the sum of its proper divisors (4950921).

11139543 is a wasteful number, since it uses less digits than its factorization.

11139543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237733 (or 1237730 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 11139543 is about 3337.5953918952. The cubic root of 11139543 is about 223.3344870117.

The spelling of 11139543 in words is "eleven million, one hundred thirty-nine thousand, five hundred forty-three".