11571413 has 4 divisors (see below), whose sum is σ = 13224480. Its totient is φ = 9918348.

The previous prime is 11571383. The next prime is 11571419. The reversal of 11571413 is 31417511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31417511 = 293 ⋅107227.

It is a cyclic number.

It is not a de Polignac number, because 11571413 - 2⁶ = 11571349 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 826523 + ... + 826536.

It is an arithmetic number, because the mean of its divisors is an integer number (3306120).

Almost surely, 2^11571413 is an apocalyptic number.

It is an amenable number.

11571413 is a deficient number, since it is larger than the sum of its proper divisors (1653067).

11571413 is an equidigital number, since it uses as much as digits as its factorization.

11571413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653066.

The product of its digits is 420, while the sum is 23.

The square root of 11571413 is about 3401.6779682974. The cubic root of 11571413 is about 226.1841308816.

Adding to 11571413 its reverse (31417511), we get a palindrome (42988924).

The spelling of 11571413 in words is "eleven million, five hundred seventy-one thousand, four hundred thirteen".