53441215521 has 16 divisors (see below), whose sum is σ = 77286581568. Its totient is φ = 32713894400.

The previous prime is 53441215501. The next prime is 53441215523. The reversal of 53441215521 is 12551214435.

It is a cyclic number.

It is not a de Polignac number, because 53441215521 - 2⁵ = 53441215489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53441215523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12776775 + ... + 12780956.

It is an arithmetic number, because the mean of its divisors is an integer number (4830411348).

Almost surely, 2^53441215521 is an apocalyptic number.

53441215521 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

53441215521 is a deficient number, since it is larger than the sum of its proper divisors (23845366047).

53441215521 is a wasteful number, since it uses less digits than its factorization.

53441215521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25557792.

The product of its digits is 24000, while the sum is 33.

Adding to 53441215521 its reverse (12551214435), we get a palindrome (65992429956).

The spelling of 53441215521 in words is "fifty-three billion, four hundred forty-one million, two hundred fifteen thousand, five hundred twenty-one".