51227250 has 64 divisors (see below), whose sum is σ = 128943360. Its totient is φ = 13545600.

The previous prime is 51227237. The next prime is 51227257. The reversal of 51227250 is 5272215.

51227250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51227250² = 5248462285125000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51227250.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51227257) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 125046 + ... + 125454.

It is an arithmetic number, because the mean of its divisors is an integer number (2014740).

Almost surely, 2^51227250 is an apocalyptic number.

51227250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51227250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64471680).

51227250 is an abundant number, since it is smaller than the sum of its proper divisors (77716110).

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

51227250 is a wasteful number, since it uses less digits than its factorization.

51227250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 51227250 is about 7157.3214263438. The cubic root of 51227250 is about 371.3929717219.

Adding to 51227250 its reverse (5272215), we get a palindrome (56499465).

The spelling of 51227250 in words is "fifty-one million, two hundred twenty-seven thousand, two hundred fifty".