432443521 has 4 divisors (see below), whose sum is σ = 446393344. Its totient is φ = 418493700.

The previous prime is 432443507. The next prime is 432443533. The reversal of 432443521 is 125344234.

It is a happy number.

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 432443521 - 2⁵ = 432443489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 432443521.

It is not an unprimeable number, because it can be changed into a prime (432443581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6974865 + ... + 6974926.

It is an arithmetic number, because the mean of its divisors is an integer number (111598336).

Almost surely, 2^432443521 is an apocalyptic number.

It is an amenable number.

432443521 is a deficient number, since it is larger than the sum of its proper divisors (13949823).

432443521 is a wasteful number, since it uses less digits than its factorization.

432443521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13949822.

The product of its digits is 11520, while the sum is 28.

The square root of 432443521 is about 20795.2764107621. The cubic root of 432443521 is about 756.2112458250.

Adding to 432443521 its reverse (125344234), we get a palindrome (557787755).

It can be divided in two parts, 432443 and 521, that added together give a square (432964 = 658²).

The spelling of 432443521 in words is "four hundred thirty-two million, four hundred forty-three thousand, five hundred twenty-one".