51044580 has 108 divisors (see below), whose sum is σ = 161195580. Its totient is φ = 13576896.

The previous prime is 51044573. The next prime is 51044627. The reversal of 51044580 is 8544015.

It can be written as a sum of positive squares in 2 ways, for example, as 15116544 + 35928036 = 3888^2 + 5994^2 .

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 131026 + ... + 131414.

Almost surely, 2^51044580 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 51044580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80597790).

51044580 is an abundant number, since it is smaller than the sum of its proper divisors (110151000).

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

51044580 is an equidigital number, since it uses as much as digits as its factorization.

51044580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 51044580 is about 7144.5489710688. The cubic root of 51044580 is about 370.9509989216.

51044580 divided by its sum of digits (27) gives a triangular number (1890540 = T₁₉₄₄).

Adding to 51044580 its reverse (8544015), we get a palindrome (59588595).

The spelling of 51044580 in words is "fifty-one million, forty-four thousand, five hundred eighty".