51225850 has 24 divisors (see below), whose sum is σ = 102610620. Its totient is φ = 18913920.

The previous prime is 51225841. The next prime is 51225883. The reversal of 51225850 is 5852215.

It can be written as a sum of positive squares in 6 ways, for example, as 203401 + 51022449 = 451^2 + 7143^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38755 + ... + 40054.

Almost surely, 2^51225850 is an apocalyptic number.

51225850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51225850 is an abundant number, since it is smaller than the sum of its proper divisors (51384770).

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

51225850 is a wasteful number, since it uses less digits than its factorization.

51225850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78834 (or 78829 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 51225850 is about 7157.2236237245. The cubic root of 51225850 is about 371.3895883995.

It can be divided in two parts, 512 and 25850, that added together give a palindrome (26362).

The spelling of 51225850 in words is "fifty-one million, two hundred twenty-five thousand, eight hundred fifty".