52821133 has 4 divisors (see below), whose sum is σ = 55117728. Its totient is φ = 50524540.

The previous prime is 52821103. The next prime is 52821149. The reversal of 52821133 is 33112825.

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 52821133 - 2¹⁷ = 52690061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52821098 and 52821107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52821103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148263 + ... + 1148308.

It is an arithmetic number, because the mean of its divisors is an integer number (13779432).

Almost surely, 2^52821133 is an apocalyptic number.

It is an amenable number.

52821133 is a deficient number, since it is larger than the sum of its proper divisors (2296595).

52821133 is a wasteful number, since it uses less digits than its factorization.

52821133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296594.

The product of its digits is 1440, while the sum is 25.

The square root of 52821133 is about 7267.8148710599. The cubic root of 52821133 is about 375.2055359186.

Adding to 52821133 its reverse (33112825), we get a palindrome (85933958).

The spelling of 52821133 in words is "fifty-two million, eight hundred twenty-one thousand, one hundred thirty-three".