11897171 has 16 divisors (see below), whose sum is σ = 14074368. Its totient is φ = 9914400.

The previous prime is 11897143. The next prime is 11897191. The reversal of 11897171 is 17179811.

11897171 = 44² + 45² + ... + 329².

11897171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11897171 - 2⁶ = 11897107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11897101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38600 + ... + 38906.

It is an arithmetic number, because the mean of its divisors is an integer number (879648).

Almost surely, 2^11897171 is an apocalyptic number.

11897171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11897171 is a deficient number, since it is larger than the sum of its proper divisors (2177197).

11897171 is a wasteful number, since it uses less digits than its factorization.

11897171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602.

The product of its digits is 3528, while the sum is 35.

The square root of 11897171 is about 3449.2275946942. The cubic root of 11897171 is about 228.2870282194.

The spelling of 11897171 in words is "eleven million, eight hundred ninety-seven thousand, one hundred seventy-one".