53225250 has 128 divisors (see below), whose sum is σ = 147184128. Its totient is φ = 12729600.

The previous prime is 53225219. The next prime is 53225261. The reversal of 53225250 is 5252235.

It is a self number, because there is not a number n which added to its sum of digits gives 53225250.

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 63 ways as a sum of consecutive naturals, for example, 516699 + ... + 516801.

It is an arithmetic number, because the mean of its divisors is an integer number (1149876).

Almost surely, 2^53225250 is an apocalyptic number.

53225250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

53225250 is the 3900-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53225250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73592064).

53225250 is an abundant number, since it is smaller than the sum of its proper divisors (93958878).

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

53225250 is a wasteful number, since it uses less digits than its factorization.

53225250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 53225250 is about 7295.5637205085. The cubic root of 53225250 is about 376.1599638132.

Adding to 53225250 its reverse (5252235), we get a palindrome (58477485).

The spelling of 53225250 in words is "fifty-three million, two hundred twenty-five thousand, two hundred fifty".