51032700 has 144 divisors (see below), whose sum is σ = 168426720. Its totient is φ = 13248000.

The previous prime is 51032677. The next prime is 51032711. The reversal of 51032700 is 723015.

51032700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 110470 + ... + 110930.

It is an arithmetic number, because the mean of its divisors is an integer number (1169630).

Almost surely, 2^51032700 is an apocalyptic number.

51032700 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 51032700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84213360).

51032700 is an abundant number, since it is smaller than the sum of its proper divisors (117394020).

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

51032700 is a wasteful number, since it uses less digits than its factorization.

51032700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 51032700 is about 7143.7175196112. The cubic root of 51032700 is about 370.9222185901.

Adding to 51032700 its reverse (723015), we get a palindrome (51755715).

The spelling of 51032700 in words is "fifty-one million, thirty-two thousand, seven hundred".