52421424 has 80 divisors (see below), whose sum is σ = 149347584. Its totient is φ = 15712000.

The previous prime is 52421371. The next prime is 52421431. The reversal of 52421424 is 42412425.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 52421394 and 52421403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52837 + ... + 53819.

Almost surely, 2^52421424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52421424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74673792).

52421424 is an abundant number, since it is smaller than the sum of its proper divisors (96926160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52421424 is a wasteful number, since it uses less digits than its factorization.

52421424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106 (or 1100 counting only the distinct ones).

The product of its digits is 2560, while the sum is 24.

The square root of 52421424 is about 7240.2640835815. The cubic root of 52421424 is about 374.2567179470.

Adding to 52421424 its reverse (42412425), we get a palindrome (94833849).

It can be divided in two parts, 5242 and 1424, that added together give a palindrome (6666).

The spelling of 52421424 in words is "fifty-two million, four hundred twenty-one thousand, four hundred twenty-four".