51072798 has 96 divisors (see below), whose sum is σ = 128701440. Its totient is φ = 13426560.

The previous prime is 51072797. The next prime is 51072803. The reversal of 51072798 is 89727015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51072793) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 228915 + ... + 229137.

It is an arithmetic number, because the mean of its divisors is an integer number (1340640).

Almost surely, 2^51072798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51072798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64350720).

51072798 is an abundant number, since it is smaller than the sum of its proper divisors (77628642).

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

51072798 is a wasteful number, since it uses less digits than its factorization.

51072798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 51072798 is about 7146.5234904812. The cubic root of 51072798 is about 371.0193415809.

It can be divided in two parts, 51072 and 798, that multiplied together give a square (40755456 = 6384²).

The spelling of 51072798 in words is "fifty-one million, seventy-two thousand, seven hundred ninety-eight".