2215554 has 16 divisors (see below), whose sum is σ = 4834080. Its totient is φ = 671360.

The previous prime is 2215547. The next prime is 2215561. The reversal of 2215554 is 4555122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2215547) and next prime (2215561).

It is a super-3 number, since 3×2215554³ = 32626333681730554392, which contains 333 as substring.

It is a d-powerful number, because it can be written as 2 + 2⁵ + 1 + 5³ + 5³ + 5⁹ + 4⁹ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16719 + ... + 16850.

It is an arithmetic number, because the mean of its divisors is an integer number (302130).

2^2215554 is an apocalyptic number.

2215554 is an abundant number, since it is smaller than the sum of its proper divisors (2618526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2215554 is a wasteful number, since it uses less digits than its factorization.

2215554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33585.

The product of its digits is 2000, while the sum is 24.

The square root of 2215554 is about 1488.4737149174. The cubic root of 2215554 is about 130.3649312274.

It can be divided in two parts, 221 and 5554, that added together give a palindrome (5775).

The spelling of 2215554 in words is "two million, two hundred fifteen thousand, five hundred fifty-four".