51729752 has 8 divisors (see below), whose sum is σ = 96993300. Its totient is φ = 25864872.

The previous prime is 51729709. The next prime is 51729757. The reversal of 51729752 is 25792715.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51729757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3233102 + ... + 3233117.

Almost surely, 2^51729752 is an apocalyptic number.

It is an amenable number.

51729752 is a deficient number, since it is larger than the sum of its proper divisors (45263548).

51729752 is a wasteful number, since it uses less digits than its factorization.

51729752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6466225 (or 6466221 counting only the distinct ones).

The product of its digits is 44100, while the sum is 38.

The square root of 51729752 is about 7192.3398139966. The cubic root of 51729752 is about 372.6033873645.

The spelling of 51729752 in words is "fifty-one million, seven hundred twenty-nine thousand, seven hundred fifty-two".