51791048 has 8 divisors (see below), whose sum is σ = 97108230. Its totient is φ = 25895520.

The previous prime is 51791041. The next prime is 51791053. The reversal of 51791048 is 84019715.

It can be written as a sum of positive squares in only one way, i.e., 47637604 + 4153444 = 6902^2 + 2038^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 51790999 and 51791017.

It is not an unprimeable number, because it can be changed into a prime (51791041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3236933 + ... + 3236948.

Almost surely, 2^51791048 is an apocalyptic number.

It is an amenable number.

51791048 is a deficient number, since it is larger than the sum of its proper divisors (45317182).

51791048 is a wasteful number, since it uses less digits than its factorization.

51791048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6473887 (or 6473883 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 51791048 is about 7196.5997526610. The cubic root of 51791048 is about 372.7504985942.

The spelling of 51791048 in words is "fifty-one million, seven hundred ninety-one thousand, forty-eight".