53281350 has 72 divisors (see below), whose sum is σ = 144209520. Its totient is φ = 14103360.

The previous prime is 53281337. The next prime is 53281367. The reversal of 53281350 is 5318235.

53281350 is a `hidden beast` number, since 532 + 81 + 3 + 50 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 74796 + ... + 75504.

It is an arithmetic number, because the mean of its divisors is an integer number (2002910).

Almost surely, 2^53281350 is an apocalyptic number.

53281350 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 53281350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72104760).

53281350 is an abundant number, since it is smaller than the sum of its proper divisors (90928170).

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

53281350 is a wasteful number, since it uses less digits than its factorization.

53281350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 53281350 is about 7299.4075102025. The cubic root of 53281350 is about 376.2920763237.

Adding to 53281350 its reverse (5318235), we get a palindrome (58599585).

The spelling of 53281350 in words is "fifty-three million, two hundred eighty-one thousand, three hundred fifty".