51071248 has 20 divisors (see below), whose sum is σ = 101626060. Its totient is φ = 24845184.

The previous prime is 51071239. The next prime is 51071249. The reversal of 51071248 is 84217015.

It can be written as a sum of positive squares in 2 ways, for example, as 27373824 + 23697424 = 5232^2 + 4868^2 .

It is not an unprimeable number, because it can be changed into a prime (51071249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42543 + ... + 43726.

It is an arithmetic number, because the mean of its divisors is an integer number (5081303).

Almost surely, 2^51071248 is an apocalyptic number.

It is an amenable number.

51071248 is a deficient number, since it is larger than the sum of its proper divisors (50554812).

51071248 is a wasteful number, since it uses less digits than its factorization.

51071248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86314 (or 86308 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 51071248 is about 7146.4150453217. The cubic root of 51071248 is about 371.0155882078.

The spelling of 51071248 in words is "fifty-one million, seventy-one thousand, two hundred forty-eight".