13132561 has 8 divisors (see below), whose sum is σ = 14599424. Its totient is φ = 11730960.

The previous prime is 13132547. The next prime is 13132583. The reversal of 13132561 is 16523131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13132561 - 2¹⁷ = 13001489 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13132261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15891 + ... + 16696.

It is an arithmetic number, because the mean of its divisors is an integer number (1824928).

Almost surely, 2^13132561 is an apocalyptic number.

It is an amenable number.

13132561 is a deficient number, since it is larger than the sum of its proper divisors (1466863).

13132561 is a wasteful number, since it uses less digits than its factorization.

13132561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32631.

The product of its digits is 540, while the sum is 22.

The square root of 13132561 is about 3623.8875534431. The cubic root of 13132561 is about 235.9299861736.

Adding to 13132561 its reverse (16523131), we get a palindrome (29655692).

The spelling of 13132561 in words is "thirteen million, one hundred thirty-two thousand, five hundred sixty-one".