52021433 has 4 divisors (see below), whose sum is σ = 53128320. Its totient is φ = 50914548.

The previous prime is 52021399. The next prime is 52021451. The reversal of 52021433 is 33412025.

It is a happy number.

52021433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 52021433 - 2⁶ = 52021369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52021493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553373 + ... + 553466.

It is an arithmetic number, because the mean of its divisors is an integer number (13282080).

Almost surely, 2^52021433 is an apocalyptic number.

It is an amenable number.

52021433 is a deficient number, since it is larger than the sum of its proper divisors (1106887).

52021433 is a wasteful number, since it uses less digits than its factorization.

52021433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106886.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 52021433 is about 7212.5885089890. The cubic root of 52021433 is about 373.3023899913.

Adding to 52021433 its reverse (33412025), we get a palindrome (85433458).

The spelling of 52021433 in words is "fifty-two million, twenty-one thousand, four hundred thirty-three".