432409561 has 2 divisors, whose sum is σ = 432409562. Its totient is φ = 432409560.

The previous prime is 432409559. The next prime is 432409573. The reversal of 432409561 is 165904234.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 415344400 + 17065161 = 20380^2 + 4131^2 .

It is a cyclic number.

It is not a de Polignac number, because 432409561 - 2¹ = 432409559 is a prime.

Together with 432409559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (432409511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216204780 + 216204781.

It is an arithmetic number, because the mean of its divisors is an integer number (216204781).

Almost surely, 2^432409561 is an apocalyptic number.

It is an amenable number.

432409561 is a deficient number, since it is larger than the sum of its proper divisors (1).

432409561 is an equidigital number, since it uses as much as digits as its factorization.

432409561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 432409561 is about 20794.4598631462. The cubic root of 432409561 is about 756.1914500945.

The spelling of 432409561 in words is "four hundred thirty-two million, four hundred nine thousand, five hundred sixty-one".