51747648 has 28 divisors (see below), whose sum is σ = 136916160. Its totient is φ = 17249152.

The previous prime is 51747637. The next prime is 51747667. The reversal of 51747648 is 84674715.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 134568 + ... + 134951.

Almost surely, 2^51747648 is an apocalyptic number.

It is an amenable number.

51747648 is an abundant number, since it is smaller than the sum of its proper divisors (85168512).

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

51747648 is a wasteful number, since it uses less digits than its factorization.

51747648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269534 (or 269524 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 51747648 is about 7193.5838078110. The cubic root of 51747648 is about 372.6463500128.

The spelling of 51747648 in words is "fifty-one million, seven hundred forty-seven thousand, six hundred forty-eight".