11551871 has 8 divisors (see below), whose sum is σ = 11993088. Its totient is φ = 11115000.

The previous prime is 11551861. The next prime is 11551879. The reversal of 11551871 is 17815511.

It is a happy number.

11551871 is digitally balanced in base 2, 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 11551871 - 2¹⁴ = 11535487 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 (11551879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4946 + ... + 6896.

It is an arithmetic number, because the mean of its divisors is an integer number (1499136).

Almost surely, 2^11551871 is an apocalyptic number.

11551871 is a deficient number, since it is larger than the sum of its proper divisors (441217).

11551871 is a wasteful number, since it uses less digits than its factorization.

11551871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173.

The product of its digits is 1400, while the sum is 29.

The square root of 11551871 is about 3398.8043485908. The cubic root of 11551871 is about 226.0567312614.

The spelling of 11551871 in words is "eleven million, five hundred fifty-one thousand, eight hundred seventy-one".