51404532 has 24 divisors (see below), whose sum is σ = 126999936. Its totient is φ = 16126848.

The previous prime is 51404527. The next prime is 51404533. The reversal of 51404532 is 23540415.

51404532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51404533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125788 + ... + 126195.

It is an arithmetic number, because the mean of its divisors is an integer number (5291664).

Almost surely, 2^51404532 is an apocalyptic number.

It is an amenable number.

51404532 is an abundant number, since it is smaller than the sum of its proper divisors (75595404).

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

51404532 is a wasteful number, since it uses less digits than its factorization.

51404532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252007 (or 252005 counting only the distinct ones).

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

The square root of 51404532 is about 7169.6953910191. The cubic root of 51404532 is about 371.8209046563.

Adding to 51404532 its reverse (23540415), we get a palindrome (74944947).

The spelling of 51404532 in words is "fifty-one million, four hundred four thousand, five hundred thirty-two".