11555542 has 4 divisors (see below), whose sum is σ = 17333316. Its totient is φ = 5777770.

The previous prime is 11555501. The next prime is 11555549. The reversal of 11555542 is 24555511.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11555542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11555549) 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 as a sum of consecutive naturals, namely, 2888884 + ... + 2888887.

It is an arithmetic number, because the mean of its divisors is an integer number (4333329).

Almost surely, 2^11555542 is an apocalyptic number.

11555542 is a deficient number, since it is larger than the sum of its proper divisors (5777774).

11555542 is an equidigital number, since it uses as much as digits as its factorization.

11555542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5777773.

The product of its digits is 5000, while the sum is 28.

The square root of 11555542 is about 3399.3443485472. The cubic root of 11555542 is about 226.0806744642.

The spelling of 11555542 in words is "eleven million, five hundred fifty-five thousand, five hundred forty-two".