51404232 has 32 divisors (see below), whose sum is σ = 140194080. Its totient is φ = 15576960.

The previous prime is 51404219. The next prime is 51404237. The reversal of 51404232 is 23240415.

It is a junction number, because it is equal to n+sod(n) for n = 51404199 and 51404208.

It is not an unprimeable number, because it can be changed into a prime (51404237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97093 + ... + 97620.

It is an arithmetic number, because the mean of its divisors is an integer number (4381065).

Almost surely, 2^51404232 is an apocalyptic number.

It is an amenable number.

51404232 is an abundant number, since it is smaller than the sum of its proper divisors (88789848).

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

51404232 is a wasteful number, since it uses less digits than its factorization.

51404232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194733 (or 194729 counting only the distinct ones).

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

The square root of 51404232 is about 7169.6744695976. The cubic root of 51404232 is about 371.8201813317.

Adding to 51404232 its reverse (23240415), we get a palindrome (74644647).

The spelling of 51404232 in words is "fifty-one million, four hundred four thousand, two hundred thirty-two".