54550211121421 has 16 divisors (see below), whose sum is σ = 58326826642560. Its totient is φ = 50891389274880.

The previous prime is 54550211121401. The next prime is 54550211121443. The reversal of 54550211121421 is 12412111205545.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54550211121421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54550211121401) 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, 4868175 + ... + 11523868.

It is an arithmetic number, because the mean of its divisors is an integer number (3645426665160).

Almost surely, 2^{54550211121421} is an apocalyptic number.

It is an amenable number.

54550211121421 is a deficient number, since it is larger than the sum of its proper divisors (3776615521139).

54550211121421 is a wasteful number, since it uses less digits than its factorization.

54550211121421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16395636.

The product of its (nonzero) digits is 16000, while the sum is 34.

Adding to 54550211121421 its reverse (12412111205545), we get a palindrome (66962322326966).

The spelling of 54550211121421 in words is "fifty-four trillion, five hundred fifty billion, two hundred eleven million, one hundred twenty-one thousand, four hundred twenty-one".