51229256 has 32 divisors (see below), whose sum is σ = 104025600. Its totient is φ = 23511360.

The previous prime is 51229249. The next prime is 51229261. The reversal of 51229256 is 65292215.

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 7 ways as a sum of consecutive naturals, for example, 18575 + ... + 21153.

It is an arithmetic number, because the mean of its divisors is an integer number (3250800).

Almost surely, 2^51229256 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 51229256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52012800).

51229256 is an abundant number, since it is smaller than the sum of its proper divisors (52796344).

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

51229256 is a wasteful number, since it uses less digits than its factorization.

51229256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789 (or 2785 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 51229256 is about 7157.4615611961. The cubic root of 51229256 is about 371.3978194320.

The spelling of 51229256 in words is "fifty-one million, two hundred twenty-nine thousand, two hundred fifty-six".