52023430021 has 4 divisors (see below), whose sum is σ = 52032841344. Its totient is φ = 52014018700.

The previous prime is 52023430007. The next prime is 52023430061. The reversal of 52023430021 is 12003432025.

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 52023430021 - 2¹⁵ = 52023397253 is a prime.

It is a super-2 number, since 2×52023430021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52023429974 and 52023430001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52023430001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4697365 + ... + 4708426.

It is an arithmetic number, because the mean of its divisors is an integer number (13008210336).

Almost surely, 2^52023430021 is an apocalyptic number.

It is an amenable number.

52023430021 is a deficient number, since it is larger than the sum of its proper divisors (9411323).

52023430021 is an equidigital number, since it uses as much as digits as its factorization.

52023430021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9411322.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 52023430021 its reverse (12003432025), we get a palindrome (64026862046).

The spelling of 52023430021 in words is "fifty-two billion, twenty-three million, four hundred thirty thousand, twenty-one".