11172427 has 4 divisors (see below), whose sum is σ = 12768496. Its totient is φ = 9576360.

The previous prime is 11172419. The next prime is 11172443. The reversal of 11172427 is 72427111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72427111 = 601 ⋅120511.

It is a cyclic number.

It is not a de Polignac number, because 11172427 - 2³ = 11172419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11172407) 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, 798024 + ... + 798037.

It is an arithmetic number, because the mean of its divisors is an integer number (3192124).

Almost surely, 2^11172427 is an apocalyptic number.

11172427 is a deficient number, since it is larger than the sum of its proper divisors (1596069).

11172427 is an equidigital number, since it uses as much as digits as its factorization.

11172427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596068.

The product of its digits is 784, while the sum is 25.

The square root of 11172427 is about 3342.5180627784. The cubic root of 11172427 is about 223.5540327165.

Adding to 11172427 its reverse (72427111), we get a palindrome (83599538).

It can be divided in two parts, 1117242 and 7, that added together give a square (1117249 = 1057²).

The spelling of 11172427 in words is "eleven million, one hundred seventy-two thousand, four hundred twenty-seven".