54221021542 has 8 divisors (see below), whose sum is σ = 84136068000. Its totient is φ = 26175665544.

The previous prime is 54221021539. The next prime is 54221021549. The reversal of 54221021542 is 24512012245.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 54221021542.

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 3 ways as a sum of consecutive naturals, for example, 467422542 + ... + 467422657.

It is an arithmetic number, because the mean of its divisors is an integer number (10517008500).

Almost surely, 2^54221021542 is an apocalyptic number.

54221021542 is a deficient number, since it is larger than the sum of its proper divisors (29915046458).

54221021542 is a wasteful number, since it uses less digits than its factorization.

54221021542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934845230.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 54221021542 its reverse (24512012245), we get a palindrome (78733033787).

The spelling of 54221021542 in words is "fifty-four billion, two hundred twenty-one million, twenty-one thousand, five hundred forty-two".