51256248 has 64 divisors (see below), whose sum is σ = 132723360. Its totient is φ = 16482816.

The previous prime is 51256229. The next prime is 51256277. The reversal of 51256248 is 84265215.

51256248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 174790 + ... + 175082.

Almost surely, 2^51256248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51256248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66361680).

51256248 is an abundant number, since it is smaller than the sum of its proper divisors (81467112).

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

51256248 is a wasteful number, since it uses less digits than its factorization.

51256248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 532 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

The square root of 51256248 is about 7159.3468975878. The cubic root of 51256248 is about 371.4630361370.

The spelling of 51256248 in words is "fifty-one million, two hundred fifty-six thousand, two hundred forty-eight".