53381530 has 32 divisors (see below), whose sum is σ = 102779280. Its totient is φ = 19891200.

The previous prime is 53381509. The next prime is 53381543. The reversal of 53381530 is 3518335.

53381530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 36808489 + 16573041 = 6067^2 + 4071^2 .

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 15 ways as a sum of consecutive naturals, for example, 15616 + ... + 18724.

Almost surely, 2^53381530 is an apocalyptic number.

53381530 is a deficient number, since it is larger than the sum of its proper divisors (49397750).

53381530 is a wasteful number, since it uses less digits than its factorization.

53381530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3234.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 53381530 is about 7306.2664884331. The cubic root of 53381530 is about 376.5277644136.

Adding to 53381530 its reverse (3518335), we get a palindrome (56899865).

The spelling of 53381530 in words is "fifty-three million, three hundred eighty-one thousand, five hundred thirty".