2221546 has 4 divisors (see below), whose sum is σ = 3332322. Its totient is φ = 1110772.

The previous prime is 2221523. The next prime is 2221567. The reversal of 2221546 is 6451222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2134521 + 87025 = 1461^2 + 295^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555385 + ... + 555388.

2^2221546 is an apocalyptic number.

2221546 is a deficient number, since it is larger than the sum of its proper divisors (1110776).

2221546 is a wasteful number, since it uses less digits than its factorization.

2221546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110775.

The product of its digits is 960, while the sum is 22.

The square root of 2221546 is about 1490.4851559140. The cubic root of 2221546 is about 130.4823500936.

Adding to 2221546 its reverse (6451222), we get a palindrome (8672768).

The spelling of 2221546 in words is "two million, two hundred twenty-one thousand, five hundred forty-six".