53245144520 has 32 divisors (see below), whose sum is σ = 123039459000. Its totient is φ = 20722434048.

The previous prime is 53245144441. The next prime is 53245144529. The reversal of 53245144520 is 2544154235.

It can be written as a sum of positive squares in 4 ways, for example, as 49888796164 + 3356348356 = 223358^2 + 57934^2 .

It is not an unprimeable number, because it can be changed into a prime (53245144529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17986745 + ... + 17989704.

Almost surely, 2^53245144520 is an apocalyptic number.

It is an amenable number.

53245144520 is an abundant number, since it is smaller than the sum of its proper divisors (69794314480).

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

53245144520 is a wasteful number, since it uses less digits than its factorization.

53245144520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35976497 (or 35976493 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 53245144520 its reverse (2544154235), we get a palindrome (55789298755).

The spelling of 53245144520 in words is "fifty-three billion, two hundred forty-five million, one hundred forty-four thousand, five hundred twenty".