51009244 has 60 divisors (see below), whose sum is σ = 107323720. Its totient is φ = 21083040.

The previous prime is 51009221. The next prime is 51009251. The reversal of 51009244 is 44290015.

51009244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 19 ways as a sum of consecutive naturals, for example, 761299 + ... + 761365.

Almost surely, 2^51009244 is an apocalyptic number.

It is an amenable number.

51009244 is an abundant number, since it is smaller than the sum of its proper divisors (56314476).

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

51009244 is a wasteful number, since it uses less digits than its factorization.

51009244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51009244 is about 7142.0756086729. The cubic root of 51009244 is about 370.8653812755.

Adding to 51009244 its reverse (44290015), we get a palindrome (95299259).

The spelling of 51009244 in words is "fifty-one million, nine thousand, two hundred forty-four".