11171456 has 16 divisors (see below), whose sum is σ = 22255890. Its totient is φ = 5585664.

The previous prime is 11171453. The next prime is 11171471. The reversal of 11171456 is 65417111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6677056 + 4494400 = 2584^2 + 2120^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (11171453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43511 + ... + 43766.

Almost surely, 2^11171456 is an apocalyptic number.

11171456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11171456 is a deficient number, since it is larger than the sum of its proper divisors (11084434).

11171456 is an frugal number, since it uses more digits than its factorization.

11171456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87291 (or 87279 counting only the distinct ones).

The product of its digits is 840, while the sum is 26.

The square root of 11171456 is about 3342.3728098463. The cubic root of 11171456 is about 223.5475561394.

Adding to 11171456 its reverse (65417111), we get a palindrome (76588567).

The spelling of 11171456 in words is "eleven million, one hundred seventy-one thousand, four hundred fifty-six".