11755563 has 8 divisors (see below), whose sum is σ = 15690048. Its totient is φ = 7829064.

The previous prime is 11755543. The next prime is 11755589. The reversal of 11755563 is 36555711.

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

It is not a de Polignac number, because 11755563 - 2⁵ = 11755531 is a prime.

It is a super-2 number, since 2×11755563² = 276386522893938, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (11755543) 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, 4120 + ... + 6362.

It is an arithmetic number, because the mean of its divisors is an integer number (1961256).

Almost surely, 2^11755563 is an apocalyptic number.

11755563 is a deficient number, since it is larger than the sum of its proper divisors (3934485).

11755563 is a wasteful number, since it uses less digits than its factorization.

11755563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993.

The product of its digits is 15750, while the sum is 33.

The square root of 11755563 is about 3428.6386511267. The cubic root of 11755563 is about 227.3776696110.

The spelling of 11755563 in words is "eleven million, seven hundred fifty-five thousand, five hundred sixty-three".