132561643 has 2 divisors, whose sum is σ = 132561644. Its totient is φ = 132561642.

The previous prime is 132561629. The next prime is 132561683. The reversal of 132561643 is 346165231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 132561643 - 2²¹ = 130464491 is a prime.

It is not a weakly prime, because it can be changed into another prime (132561683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66280821 + 66280822.

It is an arithmetic number, because the mean of its divisors is an integer number (66280822).

Almost surely, 2^132561643 is an apocalyptic number.

132561643 is a deficient number, since it is larger than the sum of its proper divisors (1).

132561643 is an equidigital number, since it uses as much as digits as its factorization.

132561643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 132561643 is about 11513.5417226846. The cubic root of 132561643 is about 509.8854580650.

The spelling of 132561643 in words is "one hundred thirty-two million, five hundred sixty-one thousand, six hundred forty-three".