132561561 has 16 divisors (see below), whose sum is σ = 197303040. Its totient is φ = 78471120.

The previous prime is 132561553. The next prime is 132561593. The reversal of 132561561 is 165165231.

It is not a de Polignac number, because 132561561 - 2³ = 132561553 is a prime.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (132561511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45291 + ... + 48128.

It is an arithmetic number, because the mean of its divisors is an integer number (12331440).

Almost surely, 2^132561561 is an apocalyptic number.

132561561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

132561561 is a deficient number, since it is larger than the sum of its proper divisors (64741479).

132561561 is a wasteful number, since it uses less digits than its factorization.

132561561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93476.

The product of its digits is 5400, while the sum is 30.

The square root of 132561561 is about 11513.5381616600. The cubic root of 132561561 is about 509.8853529300.

The spelling of 132561561 in words is "one hundred thirty-two million, five hundred sixty-one thousand, five hundred sixty-one".