51748047 has 12 divisors (see below), whose sum is σ = 80497144. Its totient is φ = 31844880.

The previous prime is 51748043. The next prime is 51748061. The reversal of 51748047 is 74084715.

It is not a de Polignac number, because 51748047 - 2² = 51748043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51748043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221029 + ... + 221262.

Almost surely, 2^51748047 is an apocalyptic number.

51748047 is a deficient number, since it is larger than the sum of its proper divisors (28749097).

51748047 is a wasteful number, since it uses less digits than its factorization.

51748047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442310 (or 442307 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 51748047 is about 7193.6115408048. The cubic root of 51748047 is about 372.6473077730.

The spelling of 51748047 in words is "fifty-one million, seven hundred forty-eight thousand, forty-seven".