51663792 has 20 divisors (see below), whose sum is σ = 133464920. Its totient is φ = 17221248.

The previous prime is 51663791. The next prime is 51663847. The reversal of 51663792 is 29736615.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 51663792.

It is not an unprimeable number, because it can be changed into a prime (51663791) by changing a digit.

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, 538117 + ... + 538212.

It is an arithmetic number, because the mean of its divisors is an integer number (6673246).

Almost surely, 2^51663792 is an apocalyptic number.

It is an amenable number.

51663792 is an abundant number, since it is smaller than the sum of its proper divisors (81801128).

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

51663792 is a wasteful number, since it uses less digits than its factorization.

51663792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076340 (or 1076334 counting only the distinct ones).

The product of its digits is 68040, while the sum is 39.

The square root of 51663792 is about 7187.7529172892. The cubic root of 51663792 is about 372.4449526031. Note that the first 3 decimals are identical.

The spelling of 51663792 in words is "fifty-one million, six hundred sixty-three thousand, seven hundred ninety-two".