51729956 has 12 divisors (see below), whose sum is σ = 90579468. Its totient is φ = 25850112.

The previous prime is 51729949. The next prime is 51729973. The reversal of 51729956 is 65992715.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7107556 + 44622400 = 2666^2 + 6680^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8780 + ... + 13436.

It is an arithmetic number, because the mean of its divisors is an integer number (7548289).

Almost surely, 2^51729956 is an apocalyptic number.

It is an amenable number.

51729956 is a deficient number, since it is larger than the sum of its proper divisors (38849512).

51729956 is a wasteful number, since it uses less digits than its factorization.

51729956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7438 (or 7436 counting only the distinct ones).

The product of its digits is 170100, while the sum is 44.

The square root of 51729956 is about 7192.3539957374. The cubic root of 51729956 is about 372.6038771600.

The spelling of 51729956 in words is "fifty-one million, seven hundred twenty-nine thousand, nine hundred fifty-six".