51224576 has 84 divisors (see below), whose sum is σ = 113927382. Its totient is φ = 23003136.

The previous prime is 51224549. The next prime is 51224597. The reversal of 51224576 is 67542215.

It can be written as a sum of positive squares in 3 ways, for example, as 36966400 + 14258176 = 6080^2 + 3776^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1384430 + ... + 1384466.

Almost surely, 2^51224576 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 51224576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56963691).

51224576 is an abundant number, since it is smaller than the sum of its proper divisors (62702806).

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

51224576 is an equidigital number, since it uses as much as digits as its factorization.

51224576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 52 counting only the distinct ones).

The product of its digits is 16800, while the sum is 32.

The square root of 51224576 is about 7157.1346221795. The cubic root of 51224576 is about 371.3865095227.

The spelling of 51224576 in words is "fifty-one million, two hundred twenty-four thousand, five hundred seventy-six".