51223256 has 16 divisors (see below), whose sum is σ = 109764240. Its totient is φ = 21952800.

The previous prime is 51223247. The next prime is 51223301. The reversal of 51223256 is 65232215.

51223256 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 3 ways as a sum of consecutive naturals, for example, 457295 + ... + 457406.

It is an arithmetic number, because the mean of its divisors is an integer number (6860265).

Almost surely, 2^51223256 is an apocalyptic number.

51223256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51223256 is an abundant number, since it is smaller than the sum of its proper divisors (58540984).

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

51223256 is a wasteful number, since it uses less digits than its factorization.

51223256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914714 (or 914710 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 51223256 is about 7157.0424059104. The cubic root of 51223256 is about 371.3833194237.

The spelling of 51223256 in words is "fifty-one million, two hundred twenty-three thousand, two hundred fifty-six".