51289248 has 48 divisors (see below), whose sum is σ = 135051840. Its totient is φ = 17043456.

The previous prime is 51289243. The next prime is 51289297. The reversal of 51289248 is 84298215.

51289248 is nontrivially palindromic in base 13.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (51289243) 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 7 ways as a sum of consecutive naturals, for example, 41536 + ... + 42752.

It is an arithmetic number, because the mean of its divisors is an integer number (2813580).

Almost surely, 2^51289248 is an apocalyptic number.

It is an amenable number.

51289248 is an abundant number, since it is smaller than the sum of its proper divisors (83762592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51289248 is a wasteful number, since it uses less digits than its factorization.

51289248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669 (or 1661 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 51289248 is about 7161.6512062513. The cubic root of 51289248 is about 371.5427379677.

The spelling of 51289248 in words is "fifty-one million, two hundred eighty-nine thousand, two hundred forty-eight".