51289798 has 16 divisors (see below), whose sum is σ = 89971200. Its totient is φ = 21469896.

The previous prime is 51289787. The next prime is 51289813. The reversal of 51289798 is 89798215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41998 + ... + 43201.

It is an arithmetic number, because the mean of its divisors is an integer number (5623200).

Almost surely, 2^51289798 is an apocalyptic number.

51289798 is a deficient number, since it is larger than the sum of its proper divisors (38681402).

51289798 is a wasteful number, since it uses less digits than its factorization.

51289798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85251.

The product of its digits is 362880, while the sum is 49.

The square root of 51289798 is about 7161.6896051141. The cubic root of 51289798 is about 371.5440660419.

The spelling of 51289798 in words is "fifty-one million, two hundred eighty-nine thousand, seven hundred ninety-eight".