51145748 has 12 divisors (see below), whose sum is σ = 91586880. Its totient is φ = 24978072.

The previous prime is 51145711. The next prime is 51145751. The reversal of 51145748 is 84754115.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148508 + ... + 148851.

It is an arithmetic number, because the mean of its divisors is an integer number (7632240).

Almost surely, 2^51145748 is an apocalyptic number.

It is an amenable number.

51145748 is a deficient number, since it is larger than the sum of its proper divisors (40441132).

51145748 is a wasteful number, since it uses less digits than its factorization.

51145748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297406 (or 297404 counting only the distinct ones).

The product of its digits is 22400, while the sum is 35.

The square root of 51145748 is about 7151.6255494817. The cubic root of 51145748 is about 371.1959064433.

The spelling of 51145748 in words is "fifty-one million, one hundred forty-five thousand, seven hundred forty-eight".