51044520 has 64 divisors (see below), whose sum is σ = 155257920. Its totient is φ = 13423104.

The previous prime is 51044519. The next prime is 51044531. The reversal of 51044520 is 2544015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5847 + ... + 11673.

It is an arithmetic number, because the mean of its divisors is an integer number (2425905).

Almost surely, 2^51044520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51044520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77628960).

51044520 is an abundant number, since it is smaller than the sum of its proper divisors (104213400).

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

51044520 is a wasteful number, since it uses less digits than its factorization.

51044520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5914 (or 5910 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 51044520 is about 7144.5447720621. The cubic root of 51044520 is about 370.9508535776.

Adding to 51044520 its reverse (2544015), we get a palindrome (53588535).

The spelling of 51044520 in words is "fifty-one million, forty-four thousand, five hundred twenty".