52004021 has 8 divisors (see below), whose sum is σ = 52876800. Its totient is φ = 51135280.

The previous prime is 52003997. The next prime is 52004023. The reversal of 52004021 is 12040025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52004021 - 2²² = 47809717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52003987 and 52004005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52004023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35420 + ... + 36858.

It is an arithmetic number, because the mean of its divisors is an integer number (6609600).

Almost surely, 2^52004021 is an apocalyptic number.

It is an amenable number.

52004021 is a deficient number, since it is larger than the sum of its proper divisors (872779).

52004021 is a wasteful number, since it uses less digits than its factorization.

52004021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 52004021 is about 7211.3813517245. The cubic root of 52004021 is about 373.2607362205.

Adding to 52004021 its reverse (12040025), we get a palindrome (64044046).

The spelling of 52004021 in words is "fifty-two million, four thousand, twenty-one".