2221454 has 4 divisors (see below), whose sum is σ = 3332184. Its totient is φ = 1110726.

The previous prime is 2221447. The next prime is 2221459. The reversal of 2221454 is 4541222.

It is a happy number.

2221454 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.

It is a d-powerful number, because it can be written as 2³ + 2⁵ + 2¹¹ + 1 + 4⁶ + 5⁹ + 4⁹ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555362 + ... + 555365.

It is an arithmetic number, because the mean of its divisors is an integer number (833046).

2^2221454 is an apocalyptic number.

2221454 is a deficient number, since it is larger than the sum of its proper divisors (1110730).

2221454 is a wasteful number, since it uses less digits than its factorization.

2221454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110729.

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

The square root of 2221454 is about 1490.4542931603. The cubic root of 2221454 is about 130.4805488642.

Adding to 2221454 its reverse (4541222), we get a palindrome (6762676).

The spelling of 2221454 in words is "two million, two hundred twenty-one thousand, four hundred fifty-four".