51996700 has 72 divisors (see below), whose sum is σ = 131241600. Its totient is φ = 17511360.

The previous prime is 51996697. The next prime is 51996701. The reversal of 51996700 is 769915.

It is a self number, because there is not a number n which added to its sum of digits gives 51996700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51996701) 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 23 ways as a sum of consecutive naturals, for example, 40671 + ... + 41929.

It is an arithmetic number, because the mean of its divisors is an integer number (1822800).

Almost surely, 2^51996700 is an apocalyptic number.

51996700 is a gapful number since it is divisible by the number (50) 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 51996700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65620800).

51996700 is an abundant number, since it is smaller than the sum of its proper divisors (79244900).

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

51996700 is a wasteful number, since it uses less digits than its factorization.

51996700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339 (or 1332 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 51996700 is about 7210.8737334667. The cubic root of 51996700 is about 373.2432198180.

The spelling of 51996700 in words is "fifty-one million, nine hundred ninety-six thousand, seven hundred".