54221890 has 8 divisors (see below), whose sum is σ = 97599420. Its totient is φ = 21688752.

The previous prime is 54221837. The next prime is 54221897. The reversal of 54221890 is 9812245.

54221890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 43678881 + 10543009 = 6609^2 + 3247^2 .

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

It is not an unprimeable number, because it can be changed into a prime (54221897) 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, 2711085 + ... + 2711104.

Almost surely, 2^54221890 is an apocalyptic number.

54221890 is a deficient number, since it is larger than the sum of its proper divisors (43377530).

54221890 is a wasteful number, since it uses less digits than its factorization.

54221890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5422196.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 54221890 is about 7363.5514529336. The cubic root of 54221890 is about 378.4933183708.

The spelling of 54221890 in words is "fifty-four million, two hundred twenty-one thousand, eight hundred ninety".