13288537 has 4 divisors (see below), whose sum is σ = 13311540. Its totient is φ = 13265536.

The previous prime is 13288529. The next prime is 13288567. The reversal of 13288537 is 73588231.

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 7817616 + 5470921 = 2796^2 + 2339^2 .

It is a cyclic number.

It is not a de Polignac number, because 13288537 - 2³ = 13288529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13288496 and 13288505.

It is not an unprimeable number, because it can be changed into a prime (13288507) 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, 10612 + ... + 11797.

It is an arithmetic number, because the mean of its divisors is an integer number (3327885).

Almost surely, 2^13288537 is an apocalyptic number.

It is an amenable number.

13288537 is a deficient number, since it is larger than the sum of its proper divisors (23003).

13288537 is an equidigital number, since it uses as much as digits as its factorization.

13288537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23002.

The product of its digits is 40320, while the sum is 37.

The square root of 13288537 is about 3645.3445653326. The cubic root of 13288537 is about 236.8603627104.

The spelling of 13288537 in words is "thirteen million, two hundred eighty-eight thousand, five hundred thirty-seven".