51242256 has 120 divisors (see below), whose sum is σ = 159600896. Its totient is φ = 15240960.

The previous prime is 51242237. The next prime is 51242273. The reversal of 51242256 is 65224215.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 57591 + ... + 58473.

Almost surely, 2^51242256 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 51242256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79800448).

51242256 is an abundant number, since it is smaller than the sum of its proper divisors (108358640).

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

51242256 is a wasteful number, since it uses less digits than its factorization.

51242256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 932 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 51242256 is about 7158.3696467841. The cubic root of 51242256 is about 371.4292322333.

The spelling of 51242256 in words is "fifty-one million, two hundred forty-two thousand, two hundred fifty-six".