51149744 has 10 divisors (see below), whose sum is σ = 99102660. Its totient is φ = 25574864.

The previous prime is 51149741. The next prime is 51149759. The reversal of 51149744 is 44794115.

51149744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51149744² = 5232592622531072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51149741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1598414 + ... + 1598445.

It is an arithmetic number, because the mean of its divisors is an integer number (9910266).

Almost surely, 2^51149744 is an apocalyptic number.

It is an amenable number.

51149744 is a deficient number, since it is larger than the sum of its proper divisors (47952916).

51149744 is a wasteful number, since it uses less digits than its factorization.

51149744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196867 (or 3196861 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 51149744 is about 7151.9049210682. The cubic root of 51149744 is about 371.2055733284.

The spelling of 51149744 in words is "fifty-one million, one hundred forty-nine thousand, seven hundred forty-four".