51797772 has 96 divisors (see below), whose sum is σ = 146764800. Its totient is φ = 15702336.

The previous prime is 51797747. The next prime is 51797789. The reversal of 51797772 is 27779715.

51797772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 in 31 ways as a sum of consecutive naturals, for example, 110683 + ... + 111149.

It is an arithmetic number, because the mean of its divisors is an integer number (1528800).

Almost surely, 2^51797772 is an apocalyptic number.

51797772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51797772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73382400).

51797772 is an abundant number, since it is smaller than the sum of its proper divisors (94967028).

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

51797772 is a wasteful number, since it uses less digits than its factorization.

51797772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572 (or 564 counting only the distinct ones).

The product of its digits is 216090, while the sum is 45.

The square root of 51797772 is about 7197.0669025652. The cubic root of 51797772 is about 372.7666292190.

It can be divided in two parts, 517 and 97772, that added together give a palindrome (98289).

The spelling of 51797772 in words is "fifty-one million, seven hundred ninety-seven thousand, seven hundred seventy-two".