2211455 has 4 divisors (see below), whose sum is σ = 2653752. Its totient is φ = 1769160.

The previous prime is 2211439. The next prime is 2211481. The reversal of 2211455 is 5541122.

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

It is not a de Polignac number, because 2211455 - 2⁴ = 2211439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221141 + ... + 221150.

It is an arithmetic number, because the mean of its divisors is an integer number (663438).

2^2211455 is an apocalyptic number.

2211455 is a deficient number, since it is larger than the sum of its proper divisors (442297).

2211455 is an equidigital number, since it uses as much as digits as its factorization.

2211455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442296.

The product of its digits is 400, while the sum is 20.

The square root of 2211455 is about 1487.0961636693. The cubic root of 2211455 is about 130.2844854734.

Adding to 2211455 its reverse (5541122), we get a palindrome (7752577).

The spelling of 2211455 in words is "two million, two hundred eleven thousand, four hundred fifty-five".