11171427 has 4 divisors (see below), whose sum is σ = 14895240. Its totient is φ = 7447616.

The previous prime is 11171401. The next prime is 11171429. The reversal of 11171427 is 72417111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11171427 - 2¹⁰ = 11170403 is a prime.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 11171397 and 11171406.

It is not an unprimeable number, because it can be changed into a prime (11171429) 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 3 ways as a sum of consecutive naturals, for example, 1861902 + ... + 1861907.

It is an arithmetic number, because the mean of its divisors is an integer number (3723810).

Almost surely, 2^11171427 is an apocalyptic number.

11171427 is a deficient number, since it is larger than the sum of its proper divisors (3723813).

11171427 is an equidigital number, since it uses as much as digits as its factorization.

11171427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3723812.

The product of its digits is 392, while the sum is 24.

The square root of 11171427 is about 3342.3684716081. The cubic root of 11171427 is about 223.5473627035.

Adding to 11171427 its reverse (72417111), we get a palindrome (83588538).

The spelling of 11171427 in words is "eleven million, one hundred seventy-one thousand, four hundred twenty-seven".