13857533 has 4 divisors (see below), whose sum is σ = 14672700. Its totient is φ = 13042368.

The previous prime is 13857521. The next prime is 13857551. The reversal of 13857533 is 33575831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33575831 = 19 ⋅1767149.

It can be written as a sum of positive squares in 2 ways, for example, as 9375844 + 4481689 = 3062^2 + 2117^2 .

It is a cyclic number.

It is not a de Polignac number, because 13857533 - 2¹⁰ = 13856509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13857493 and 13857502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13257533) 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, 407558 + ... + 407591.

It is an arithmetic number, because the mean of its divisors is an integer number (3668175).

Almost surely, 2^13857533 is an apocalyptic number.

It is an amenable number.

13857533 is a deficient number, since it is larger than the sum of its proper divisors (815167).

13857533 is an equidigital number, since it uses as much as digits as its factorization.

13857533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815166.

The product of its digits is 37800, while the sum is 35.

The square root of 13857533 is about 3722.5707515103. The cubic root of 13857533 is about 240.1939000157.

The spelling of 13857533 in words is "thirteen million, eight hundred fifty-seven thousand, five hundred thirty-three".