51317944 has 16 divisors (see below), whose sum is σ = 96333120. Its totient is φ = 25629120.

The previous prime is 51317941. The next prime is 51317957. The reversal of 51317944 is 44971315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51317941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4692 + ... + 11164.

It is an arithmetic number, because the mean of its divisors is an integer number (6020820).

Almost surely, 2^51317944 is an apocalyptic number.

It is an amenable number.

51317944 is a deficient number, since it is larger than the sum of its proper divisors (45015176).

51317944 is a wasteful number, since it uses less digits than its factorization.

51317944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7470 (or 7466 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 51317944 is about 7163.6543746889. The cubic root of 51317944 is about 371.6120169624.

The spelling of 51317944 in words is "fifty-one million, three hundred seventeen thousand, nine hundred forty-four".