52316421 has 32 divisors (see below), whose sum is σ = 75479040. Its totient is φ = 32155200.

The previous prime is 52316419. The next prime is 52316431. The reversal of 52316421 is 12461325.

It is not a de Polignac number, because 52316421 - 2¹ = 52316419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52316391 and 52316400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52316431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288951 + ... + 289131.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^52316421 is an apocalyptic number.

It is an amenable number.

52316421 is a deficient number, since it is larger than the sum of its proper divisors (23162619).

52316421 is a wasteful number, since it uses less digits than its factorization.

52316421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337.

The product of its digits is 1440, while the sum is 24.

The square root of 52316421 is about 7233.0091248387. The cubic root of 52316421 is about 374.0066653087.

Adding to 52316421 its reverse (12461325), we get a palindrome (64777746).

The spelling of 52316421 in words is "fifty-two million, three hundred sixteen thousand, four hundred twenty-one".