51204424 has 16 divisors (see below), whose sum is σ = 96088320. Its totient is φ = 25580880.

The previous prime is 51204421. The next prime is 51204427. The reversal of 51204424 is 42440215.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51204421) and next prime (51204427).

It is a junction number, because it is equal to n+sod(n) for n = 51204395 and 51204404.

It is not an unprimeable number, because it can be changed into a prime (51204421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12829 + ... + 16339.

It is an arithmetic number, because the mean of its divisors is an integer number (6005520).

Almost surely, 2^51204424 is an apocalyptic number.

It is an amenable number.

51204424 is a deficient number, since it is larger than the sum of its proper divisors (44883896).

51204424 is a wasteful number, since it uses less digits than its factorization.

51204424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5340 (or 5336 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 51204424 is about 7155.7266577197. The cubic root of 51204424 is about 371.3378013753.

Adding to 51204424 its reverse (42440215), we get a palindrome (93644639).

The spelling of 51204424 in words is "fifty-one million, two hundred four thousand, four hundred twenty-four".