54221021541 has 16 divisors (see below), whose sum is σ = 82918648320. Its totient is φ = 34981303680.

The previous prime is 54221021539. The next prime is 54221021549. The reversal of 54221021541 is 14512012245.

It is a happy number.

54221021541 is a `hidden beast` number, since 542 + 2 + 102 + 15 + 4 + 1 = 666.

It is not a de Polignac number, because 54221021541 - 2¹ = 54221021539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54221021549) 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 15 ways as a sum of consecutive naturals, for example, 32389260 + ... + 32390933.

It is an arithmetic number, because the mean of its divisors is an integer number (5182415520).

Almost surely, 2^54221021541 is an apocalyptic number.

It is an amenable number.

54221021541 is a deficient number, since it is larger than the sum of its proper divisors (28697626779).

54221021541 is a wasteful number, since it uses less digits than its factorization.

54221021541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64780233 (or 64780227 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 54221021541 its reverse (14512012245), we get a palindrome (68733033786).

The spelling of 54221021541 in words is "fifty-four billion, two hundred twenty-one million, twenty-one thousand, five hundred forty-one".