53445120252 has 24 divisors (see below), whose sum is σ = 125602444800. Its totient is φ = 17686873776.

The previous prime is 53445120221. The next prime is 53445120257. The reversal of 53445120252 is 25202154435.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53445120257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16019052 + ... + 16022387.

It is an arithmetic number, because the mean of its divisors is an integer number (5233435200).

Almost surely, 2^53445120252 is an apocalyptic number.

It is an amenable number.

53445120252 is an abundant number, since it is smaller than the sum of its proper divisors (72157324548).

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

53445120252 is a wasteful number, since it uses less digits than its factorization.

53445120252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32041585 (or 32041583 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 53445120252 its reverse (25202154435), we get a palindrome (78647274687).

The spelling of 53445120252 in words is "fifty-three billion, four hundred forty-five million, one hundred twenty thousand, two hundred fifty-two".