11571422 has 4 divisors (see below), whose sum is σ = 17357136. Its totient is φ = 5785710.

The previous prime is 11571419. The next prime is 11571433. The reversal of 11571422 is 22417511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22417511 = 19 ⋅1179869.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2892854 + ... + 2892857.

It is an arithmetic number, because the mean of its divisors is an integer number (4339284).

Almost surely, 2^11571422 is an apocalyptic number.

11571422 is a deficient number, since it is larger than the sum of its proper divisors (5785714).

11571422 is an equidigital number, since it uses as much as digits as its factorization.

11571422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5785713.

The product of its digits is 560, while the sum is 23.

The square root of 11571422 is about 3401.6792911737. The cubic root of 11571422 is about 226.1841895220.

Adding to 11571422 its reverse (22417511), we get a palindrome (33988933).

The spelling of 11571422 in words is "eleven million, five hundred seventy-one thousand, four hundred twenty-two".