53550563652121 has 4 divisors (see below), whose sum is σ = 53648462306512. Its totient is φ = 53452664997732.

The previous prime is 53550563652109. The next prime is 53550563652139. The reversal of 53550563652121 is 12125636505535.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53550563652121 - 2¹⁵ = 53550563619353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53550563653121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48949326375 + ... + 48949327468.

It is an arithmetic number, because the mean of its divisors is an integer number (13412115576628).

Almost surely, 2^{53550563652121} is an apocalyptic number.

It is an amenable number.

53550563652121 is a deficient number, since it is larger than the sum of its proper divisors (97898654391).

53550563652121 is an equidigital number, since it uses as much as digits as its factorization.

53550563652121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97898654390.

The product of its (nonzero) digits is 4050000, while the sum is 49.

The spelling of 53550563652121 in words is "fifty-three trillion, five hundred fifty billion, five hundred sixty-three million, six hundred fifty-two thousand, one hundred twenty-one".