51044500 has 48 divisors (see below), whose sum is σ = 120071952. Its totient is φ = 18844800.

The previous prime is 51044471. The next prime is 51044509. The reversal of 51044500 is 544015.

It can be written as a sum of positive squares in 8 ways, for example, as 41422096 + 9622404 = 6436^2 + 3102^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51044509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2574 + ... + 10426.

It is an arithmetic number, because the mean of its divisors is an integer number (2501499).

Almost surely, 2^51044500 is an apocalyptic number.

51044500 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 51044500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60035976).

51044500 is an abundant number, since it is smaller than the sum of its proper divisors (69027452).

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

51044500 is a wasteful number, since it uses less digits than its factorization.

51044500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7885 (or 7873 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 51044500 is about 7144.5433723927. The cubic root of 51044500 is about 370.9508051295.

Adding to 51044500 its reverse (544015), we get a palindrome (51588515).

It can be divided in two parts, 5104 and 4500, that added together give a square (9604 = 98²).

The spelling of 51044500 in words is "fifty-one million, forty-four thousand, five hundred".