132681561 has 4 divisors (see below), whose sum is σ = 176908752. Its totient is φ = 88454372.

The previous prime is 132681533. The next prime is 132681569. The reversal of 132681561 is 165186231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 132681561 - 2⁵ = 132681529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (132681569) 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, 22113591 + ... + 22113596.

It is an arithmetic number, because the mean of its divisors is an integer number (44227188).

Almost surely, 2^132681561 is an apocalyptic number.

It is an amenable number.

132681561 is a deficient number, since it is larger than the sum of its proper divisors (44227191).

132681561 is an equidigital number, since it uses as much as digits as its factorization.

132681561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44227190.

The product of its digits is 8640, while the sum is 33.

The square root of 132681561 is about 11518.7482392836. The cubic root of 132681561 is about 510.0391626981.

The spelling of 132681561 in words is "one hundred thirty-two million, six hundred eighty-one thousand, five hundred sixty-one".