51738740 has 24 divisors (see below), whose sum is σ = 110275872. Its totient is φ = 20386080.

The previous prime is 51738727. The next prime is 51738751. The reversal of 51738740 is 4783715.

51738740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51738740.

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 7 ways as a sum of consecutive naturals, for example, 17966 + ... + 20645.

It is an arithmetic number, because the mean of its divisors is an integer number (4594828).

Almost surely, 2^51738740 is an apocalyptic number.

It is an amenable number.

51738740 is an abundant number, since it is smaller than the sum of its proper divisors (58537132).

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

51738740 is a wasteful number, since it uses less digits than its factorization.

51738740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38687 (or 38685 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 51738740 is about 7192.9646182920. The cubic root of 51738740 is about 372.6249659544.

The spelling of 51738740 in words is "fifty-one million, seven hundred thirty-eight thousand, seven hundred forty".