53215505421253 has 32 divisors (see below), whose sum is σ = 67456486347264. Its totient is φ = 40903845937152.

The previous prime is 53215505421229. The next prime is 53215505421289. The reversal of 53215505421253 is 35212450551235.

It is a de Polignac number, because none of the positive numbers 2^k-53215505421253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53215505421203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37123450 + ... + 38530267.

It is an arithmetic number, because the mean of its divisors is an integer number (2108015198352).

Almost surely, 2^{53215505421253} is an apocalyptic number.

It is an amenable number.

53215505421253 is a deficient number, since it is larger than the sum of its proper divisors (14240980926011).

53215505421253 is a wasteful number, since it uses less digits than its factorization.

53215505421253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75654021.

The product of its (nonzero) digits is 900000, while the sum is 43.

Adding to 53215505421253 its reverse (35212450551235), we get a palindrome (88427955972488).

The spelling of 53215505421253 in words is "fifty-three trillion, two hundred fifteen billion, five hundred five million, four hundred twenty-one thousand, two hundred fifty-three".