51009968 has 10 divisors (see below), whose sum is σ = 98831844. Its totient is φ = 25504976.

The previous prime is 51009967. The next prime is 51010019. The reversal of 51009968 is 86990015.

It is a super-2 number, since 2×51009968² = 5204033670722048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51009961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1594046 + ... + 1594077.

Almost surely, 2^51009968 is an apocalyptic number.

It is an amenable number.

51009968 is a deficient number, since it is larger than the sum of its proper divisors (47821876).

51009968 is a wasteful number, since it uses less digits than its factorization.

51009968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188131 (or 3188125 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 51009968 is about 7142.1262940388. The cubic root of 51009968 is about 370.8671358939.

The spelling of 51009968 in words is "fifty-one million, nine thousand, nine hundred sixty-eight".