51256424 has 16 divisors (see below), whose sum is σ = 97005600. Its totient is φ = 25388272.

The previous prime is 51256421. The next prime is 51256441. The reversal of 51256424 is 42465215.

It is not an unprimeable number, because it can be changed into a prime (51256421) 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 in 3 ways as a sum of consecutive naturals, for example, 29084 + ... + 30795.

It is an arithmetic number, because the mean of its divisors is an integer number (6062850).

Almost surely, 2^51256424 is an apocalyptic number.

It is an amenable number.

51256424 is a deficient number, since it is larger than the sum of its proper divisors (45749176).

51256424 is a wasteful number, since it uses less digits than its factorization.

51256424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59992 (or 59988 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 51256424 is about 7159.3591892012. The cubic root of 51256424 is about 371.4634613041.

The spelling of 51256424 in words is "fifty-one million, two hundred fifty-six thousand, four hundred twenty-four".