51450432 has 112 divisors (see below), whose sum is σ = 157349952. Its totient is φ = 14663680.

The previous prime is 51450407. The next prime is 51450467. The reversal of 51450432 is 23405415.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35188 + ... + 36620.

Almost surely, 2^51450432 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 51450432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78674976).

51450432 is an abundant number, since it is smaller than the sum of its proper divisors (105899520).

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

51450432 is a wasteful number, since it uses less digits than its factorization.

51450432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476 (or 1466 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 51450432 is about 7172.8956495965. The cubic root of 51450432 is about 371.9315401827.

Adding to 51450432 its reverse (23405415), we get a palindrome (74855847).

The spelling of 51450432 in words is "fifty-one million, four hundred fifty thousand, four hundred thirty-two".