13571157 has 4 divisors (see below), whose sum is σ = 18094880. Its totient is φ = 9047436.

The previous prime is 13571147. The next prime is 13571171. The reversal of 13571157 is 75117531.

13571157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 13571157 - 2⁴ = 13571141 is a prime.

It is a super-3 number, since 3×13571157³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13571147) 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, 2261857 + ... + 2261862.

It is an arithmetic number, because the mean of its divisors is an integer number (4523720).

Almost surely, 2^13571157 is an apocalyptic number.

It is an amenable number.

13571157 is a deficient number, since it is larger than the sum of its proper divisors (4523723).

13571157 is an equidigital number, since it uses as much as digits as its factorization.

13571157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4523722.

The product of its digits is 3675, while the sum is 30.

The square root of 13571157 is about 3683.9051290716. The cubic root of 13571157 is about 238.5277756417.

Adding to 13571157 its reverse (75117531), we get a palindrome (88688688).

The spelling of 13571157 in words is "thirteen million, five hundred seventy-one thousand, one hundred fifty-seven".