11571417 has 64 divisors (see below), whose sum is σ = 20939520. Its totient is φ = 6298560.

The previous prime is 11571383. The next prime is 11571419. The reversal of 11571417 is 71417511.

It is not a de Polignac number, because 11571417 - 2⁷ = 11571289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11571419) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 312723 + ... + 312759.

It is an arithmetic number, because the mean of its divisors is an integer number (327180).

Almost surely, 2^11571417 is an apocalyptic number.

It is an amenable number.

11571417 is a deficient number, since it is larger than the sum of its proper divisors (9368103).

11571417 is an equidigital number, since it uses as much as digits as its factorization.

11571417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 64 counting only the distinct ones).

The product of its digits is 980, while the sum is 27.

The square root of 11571417 is about 3401.6785562425. The cubic root of 11571417 is about 226.1841569440.

Adding to 11571417 its reverse (71417511), we get a palindrome (82988928).

The spelling of 11571417 in words is "eleven million, five hundred seventy-one thousand, four hundred seventeen".