11555071 has 8 divisors (see below), whose sum is σ = 12913488. Its totient is φ = 10248000.

The previous prime is 11555069. The next prime is 11555077. The reversal of 11555071 is 17055511.

11555071 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11555071 - 2¹ = 11555069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11555077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12360 + ... + 13261.

It is an arithmetic number, because the mean of its divisors is an integer number (1614186).

Almost surely, 2^11555071 is an apocalyptic number.

11555071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11555071 is a deficient number, since it is larger than the sum of its proper divisors (1358417).

11555071 is a wasteful number, since it uses less digits than its factorization.

11555071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25673.

The product of its (nonzero) digits is 875, while the sum is 25.

The square root of 11555071 is about 3399.2750697759. The cubic root of 11555071 is about 226.0776027651.

It can be divided in two parts, 1155 and 5071, that added together give a palindrome (6226).

The spelling of 11555071 in words is "eleven million, five hundred fifty-five thousand, seventy-one".