2212455 has 32 divisors (see below), whose sum is σ = 4262400. Its totient is φ = 957312.

The previous prime is 2212453. The next prime is 2212471. The reversal of 2212455 is 5542122.

It is a happy number.

It is not a de Polignac number, because 2212455 - 2¹ = 2212453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

2212455 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1441 + ... + 2549.

It is an arithmetic number, because the mean of its divisors is an integer number (133200).

2^2212455 is an apocalyptic number.

2212455 is a deficient number, since it is larger than the sum of its proper divisors (2049945).

2212455 is a wasteful number, since it uses less digits than its factorization.

2212455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143.

The product of its digits is 800, while the sum is 21.

The square root of 2212455 is about 1487.4323514029. The cubic root of 2212455 is about 130.3041203371.

Adding to 2212455 its reverse (5542122), we get a palindrome (7754577).

The spelling of 2212455 in words is "two million, two hundred twelve thousand, four hundred fifty-five".