11155542 has 16 divisors (see below), whose sum is σ = 22425600. Its totient is φ = 3699432.

The previous prime is 11155541. The next prime is 11155549. The reversal of 11155542 is 24555111.

It is a super-2 number, since 2×11155542² = 248892234627528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3478 + ... + 5865.

It is an arithmetic number, because the mean of its divisors is an integer number (1401600).

Almost surely, 2^11155542 is an apocalyptic number.

11155542 is an abundant number, since it is smaller than the sum of its proper divisors (11270058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11155542 is a wasteful number, since it uses less digits than its factorization.

11155542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9547.

The product of its digits is 1000, while the sum is 24.

The square root of 11155542 is about 3339.9913173540. The cubic root of 11155542 is about 223.4413561236.

The spelling of 11155542 in words is "eleven million, one hundred fifty-five thousand, five hundred forty-two".