51424464 has 160 divisors (see below), whose sum is σ = 167044864. Its totient is φ = 13271040.

The previous prime is 51424427. The next prime is 51424523. The reversal of 51424464 is 46442415.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266352 + ... + 266544.

Almost surely, 2^51424464 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 51424464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83522432).

51424464 is an abundant number, since it is smaller than the sum of its proper divisors (115620400).

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

51424464 is a wasteful number, since it uses less digits than its factorization.

51424464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 279 counting only the distinct ones).

The product of its digits is 15360, while the sum is 30.

The square root of 51424464 is about 7171.0852735133. The cubic root of 51424464 is about 371.8689560395.

Adding to 51424464 its reverse (46442415), we get a palindrome (97866879).

The spelling of 51424464 in words is "fifty-one million, four hundred twenty-four thousand, four hundred sixty-four".