52416421 has 16 divisors (see below), whose sum is σ = 57139200. Its totient is φ = 47921328.

The previous prime is 52416407. The next prime is 52416439. The reversal of 52416421 is 12461425.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 52416421 - 2²⁵ = 18861989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52416451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70176 + ... + 70918.

It is an arithmetic number, because the mean of its divisors is an integer number (3571200).

Almost surely, 2^52416421 is an apocalyptic number.

It is an amenable number.

52416421 is a deficient number, since it is larger than the sum of its proper divisors (4722779).

52416421 is a wasteful number, since it uses less digits than its factorization.

52416421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888.

The product of its digits is 1920, while the sum is 25.

The square root of 52416421 is about 7239.9185768902. The cubic root of 52416421 is about 374.2448114542.

Adding to 52416421 its reverse (12461425), we get a palindrome (64877846).

The spelling of 52416421 in words is "fifty-two million, four hundred sixteen thousand, four hundred twenty-one".