52432021 has 2 divisors, whose sum is σ = 52432022. Its totient is φ = 52432020.

The previous prime is 52431991. The next prime is 52432027. The reversal of 52432021 is 12023425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52403121 + 28900 = 7239^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 52432021 - 2¹³ = 52423829 is a prime.

It is a super-2 number, since 2×52432021² = 5498233652288882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52432021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52432027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26216010 + 26216011.

It is an arithmetic number, because the mean of its divisors is an integer number (26216011).

Almost surely, 2^52432021 is an apocalyptic number.

It is an amenable number.

52432021 is a deficient number, since it is larger than the sum of its proper divisors (1).

52432021 is an equidigital number, since it uses as much as digits as its factorization.

52432021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 52432021 is about 7240.9958569247. The cubic root of 52432021 is about 374.2819349348.

Adding to 52432021 its reverse (12023425), we get a palindrome (64455446).

The spelling of 52432021 in words is "fifty-two million, four hundred thirty-two thousand, twenty-one".