52208421 has 8 divisors (see below), whose sum is σ = 69869184. Its totient is φ = 34676640.

The previous prime is 52208419. The next prime is 52208423. The reversal of 52208421 is 12480225.

It is an interprime number because it is at equal distance from previous prime (52208419) and next prime (52208423).

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

It is not a de Polignac number, because 52208421 - 2¹ = 52208419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52208391 and 52208400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52208423) 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, 31296 + ... + 32921.

It is an arithmetic number, because the mean of its divisors is an integer number (8733648).

Almost surely, 2^52208421 is an apocalyptic number.

It is an amenable number.

52208421 is a deficient number, since it is larger than the sum of its proper divisors (17660763).

52208421 is a wasteful number, since it uses less digits than its factorization.

52208421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64491.

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

The square root of 52208421 is about 7225.5394954287. The cubic root of 52208421 is about 373.7491263687.

Adding to 52208421 its reverse (12480225), we get a palindrome (64688646).

The spelling of 52208421 in words is "fifty-two million, two hundred eight thousand, four hundred twenty-one".