51424032 has 144 divisors (see below), whose sum is σ = 156854880. Its totient is φ = 14699520.

The previous prime is 51424027. The next prime is 51424033. The reversal of 51424032 is 23042415.

It is not an unprimeable number, because it can be changed into a prime (51424033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220588 + ... + 220820.

It is an arithmetic number, because the mean of its divisors is an integer number (1089270).

Almost surely, 2^51424032 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 51424032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78427440).

51424032 is an abundant number, since it is smaller than the sum of its proper divisors (105430848).

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

51424032 is a wasteful number, since it uses less digits than its factorization.

51424032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 51424032 is about 7171.0551524863. The cubic root of 51424032 is about 371.8679147204.

Adding to 51424032 its reverse (23042415), we get a palindrome (74466447).

The spelling of 51424032 in words is "fifty-one million, four hundred twenty-four thousand, thirty-two".