13575857 has 4 divisors (see below), whose sum is σ = 14044020. Its totient is φ = 13107696.

The previous prime is 13575833. The next prime is 13575869. The reversal of 13575857 is 75857531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2876416 + 10699441 = 1696^2 + 3271^2 .

It is a cyclic number.

It is not a de Polignac number, because 13575857 - 2²² = 9381553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13575817) 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, 234038 + ... + 234095.

It is an arithmetic number, because the mean of its divisors is an integer number (3511005).

Almost surely, 2^13575857 is an apocalyptic number.

It is an amenable number.

13575857 is a deficient number, since it is larger than the sum of its proper divisors (468163).

13575857 is an equidigital number, since it uses as much as digits as its factorization.

13575857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468162.

The product of its digits is 147000, while the sum is 41.

The square root of 13575857 is about 3684.5429838719. The cubic root of 13575857 is about 238.5553083262. Note that the first 3 decimals are identical.

The spelling of 13575857 in words is "thirteen million, five hundred seventy-five thousand, eight hundred fifty-seven".