51321752 has 8 divisors (see below), whose sum is σ = 96228300. Its totient is φ = 25660872.

The previous prime is 51321733. The next prime is 51321773. The reversal of 51321752 is 25712315.

51321752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3207602 + ... + 3207617.

Almost surely, 2^51321752 is an apocalyptic number.

It is an amenable number.

51321752 is a deficient number, since it is larger than the sum of its proper divisors (44906548).

51321752 is a wasteful number, since it uses less digits than its factorization.

51321752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6415225 (or 6415221 counting only the distinct ones).

The product of its digits is 2100, while the sum is 26.

The square root of 51321752 is about 7163.9201558923. The cubic root of 51321752 is about 371.6212084424.

The spelling of 51321752 in words is "fifty-one million, three hundred twenty-one thousand, seven hundred fifty-two".