54422021 has 4 divisors (see below), whose sum is σ = 55077792. Its totient is φ = 53766252.

The previous prime is 54422003. The next prime is 54422029. The reversal of 54422021 is 12022445.

It is a happy number.

54422021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 54422021 - 2²² = 50227717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54421984 and 54422002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54422029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327761 + ... + 327926.

It is an arithmetic number, because the mean of its divisors is an integer number (13769448).

Almost surely, 2^54422021 is an apocalyptic number.

It is an amenable number.

54422021 is a deficient number, since it is larger than the sum of its proper divisors (655771).

54422021 is an equidigital number, since it uses as much as digits as its factorization.

54422021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655770.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 54422021 is about 7377.1282352959. The cubic root of 54422021 is about 378.9584149229.

Adding to 54422021 its reverse (12022445), we get a palindrome (66444466).

The spelling of 54422021 in words is "fifty-four million, four hundred twenty-two thousand, twenty-one".