2221154 has 8 divisors (see below), whose sum is σ = 3588060. Its totient is φ = 1025136.

The previous prime is 2221129. The next prime is 2221159. The reversal of 2221154 is 4511222.

2221154 = 33² + 34² + ... + 188².

It can be written as a sum of positive squares in 2 ways, for example, as 1620529 + 600625 = 1273^2 + 775^2 .

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 (2221159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42689 + ... + 42740.

2^2221154 is an apocalyptic number.

2221154 is a deficient number, since it is larger than the sum of its proper divisors (1366906).

2221154 is a wasteful number, since it uses less digits than its factorization.

2221154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85444.

The product of its digits is 160, while the sum is 17.

The square root of 2221154 is about 1490.3536493061. The cubic root of 2221154 is about 130.4746749446.

Adding to 2221154 its reverse (4511222), we get a palindrome (6732376).

The spelling of 2221154 in words is "two million, two hundred twenty-one thousand, one hundred fifty-four".