51424832 has 14 divisors (see below), whose sum is σ = 102046278. Its totient is φ = 25712384.

The previous prime is 51424829. The next prime is 51424837. The reversal of 51424832 is 23842415.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 33918976 + 17505856 = 5824^2 + 4184^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51424795 and 51424804.

It is not an unprimeable number, because it can be changed into a prime (51424837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401693 + ... + 401820.

Almost surely, 2^51424832 is an apocalyptic number.

It is an amenable number.

51424832 is a deficient number, since it is larger than the sum of its proper divisors (50621446).

51424832 is an equidigital number, since it uses as much as digits as its factorization.

51424832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803525 (or 803515 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 51424832 is about 7171.1109320662. The cubic root of 51424832 is about 371.8698430846.

The spelling of 51424832 in words is "fifty-one million, four hundred twenty-four thousand, eight hundred thirty-two".