13457539 has 4 divisors (see below), whose sum is σ = 13486824. Its totient is φ = 13428256.

The previous prime is 13457533. The next prime is 13457551. The reversal of 13457539 is 93575431.

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

It is a cyclic number.

It is not a de Polignac number, because 13457539 - 2¹⁵ = 13424771 is a prime.

It is a super-2 number, since 2×13457539² = 362210711873042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13457498 and 13457507.

It is not an unprimeable number, because it can be changed into a prime (13457533) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 13942 + ... + 14875.

It is an arithmetic number, because the mean of its divisors is an integer number (3371706).

Almost surely, 2^13457539 is an apocalyptic number.

13457539 is a deficient number, since it is larger than the sum of its proper divisors (29285).

13457539 is an equidigital number, since it uses as much as digits as its factorization.

13457539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29284.

The product of its digits is 56700, while the sum is 37.

The square root of 13457539 is about 3668.4518533027. The cubic root of 13457539 is about 237.8602562172.

It can be divided in two parts, 134575 and 39, that multiplied together give a palindrome (5248425).

The spelling of 13457539 in words is "thirteen million, four hundred fifty-seven thousand, five hundred thirty-nine".