2221463 has 4 divisors (see below), whose sum is σ = 2251968. Its totient is φ = 2190960.

The previous prime is 2221459. The next prime is 2221507. The reversal of 2221463 is 3641222.

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

It is a cyclic number.

It is not a de Polignac number, because 2221463 - 2² = 2221459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221403) 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, 15143 + ... + 15288.

It is an arithmetic number, because the mean of its divisors is an integer number (562992).

2^2221463 is an apocalyptic number.

2221463 is a deficient number, since it is larger than the sum of its proper divisors (30505).

2221463 is an equidigital number, since it uses as much as digits as its factorization.

2221463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30504.

The product of its digits is 576, while the sum is 20.

The square root of 2221463 is about 1490.4573123709. The cubic root of 2221463 is about 130.4807250736.

Adding to 2221463 its reverse (3641222), we get a palindrome (5862685).

The spelling of 2221463 in words is "two million, two hundred twenty-one thousand, four hundred sixty-three".