51403332 has 24 divisors (see below), whose sum is σ = 123811072. Its totient is φ = 16581600.

The previous prime is 51403327. The next prime is 51403333. The reversal of 51403332 is 23330415.

It is a junction number, because it is equal to n+sod(n) for n = 51403299 and 51403308.

It is not an unprimeable number, because it can be changed into a prime (51403333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68719 + ... + 69462.

Almost surely, 2^51403332 is an apocalyptic number.

It is an amenable number.

51403332 is an abundant number, since it is smaller than the sum of its proper divisors (72407740).

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

51403332 is a wasteful number, since it uses less digits than its factorization.

51403332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138219 (or 138217 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 51403332 is about 7169.6117049670. The cubic root of 51403332 is about 371.8180113410.

Adding to 51403332 its reverse (23330415), we get a palindrome (74733747).

The spelling of 51403332 in words is "fifty-one million, four hundred three thousand, three hundred thirty-two".