52432032421 has 2 divisors, whose sum is σ = 52432032422. Its totient is φ = 52432032420.

The previous prime is 52432032391. The next prime is 52432032479. The reversal of 52432032421 is 12423023425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50039453025 + 2392579396 = 223695^2 + 48914^2 .

It is a cyclic number.

It is not a de Polignac number, because 52432032421 - 2²⁷ = 52297814693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52432032421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52432032481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26216016210 + 26216016211.

It is an arithmetic number, because the mean of its divisors is an integer number (26216016211).

Almost surely, 2^52432032421 is an apocalyptic number.

It is an amenable number.

52432032421 is a deficient number, since it is larger than the sum of its proper divisors (1).

52432032421 is an equidigital number, since it uses as much as digits as its factorization.

52432032421 is an evil number, because the sum of its binary digits is even.

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

Adding to 52432032421 its reverse (12423023425), we get a palindrome (64855055846).

The spelling of 52432032421 in words is "fifty-two billion, four hundred thirty-two million, thirty-two thousand, four hundred twenty-one".