54721242 has 24 divisors (see below), whose sum is σ = 119421120. Its totient is φ = 18108360.

The previous prime is 54721213. The next prime is 54721243. The reversal of 54721242 is 24212745.

It is not an unprimeable number, because it can be changed into a prime (54721243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8434 + ... + 13437.

It is an arithmetic number, because the mean of its divisors is an integer number (4975880).

Almost surely, 2^54721242 is an apocalyptic number.

54721242 is an abundant number, since it is smaller than the sum of its proper divisors (64699878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54721242 is a wasteful number, since it uses less digits than its factorization.

54721242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22018 (or 22015 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 54721242 is about 7397.3807526719. The cubic root of 54721242 is about 379.6516706423.

Adding to 54721242 its reverse (24212745), we get a palindrome (78933987).

The spelling of 54721242 in words is "fifty-four million, seven hundred twenty-one thousand, two hundred forty-two".