52204821 has 4 divisors (see below), whose sum is σ = 69606432. Its totient is φ = 34803212.

The previous prime is 52204769. The next prime is 52204853. The reversal of 52204821 is 12840225.

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 52204821 - 2²² = 48010517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52204791 and 52204800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52204121) 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, 8700801 + ... + 8700806.

It is an arithmetic number, because the mean of its divisors is an integer number (17401608).

Almost surely, 2^52204821 is an apocalyptic number.

It is an amenable number.

52204821 is a deficient number, since it is larger than the sum of its proper divisors (17401611).

52204821 is a wasteful number, since it uses less digits than its factorization.

52204821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17401610.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 52204821 is about 7225.2903747877. The cubic root of 52204821 is about 373.7405356231.

The spelling of 52204821 in words is "fifty-two million, two hundred four thousand, eight hundred twenty-one".