2221375 has 16 divisors (see below), whose sum is σ = 2987712. Its totient is φ = 1639200.

The previous prime is 2221343. The next prime is 2221379. The reversal of 2221375 is 5731222.

It is not a de Polignac number, because 2221375 - 2⁵ = 2221343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942 + ... + 2308.

It is an arithmetic number, because the mean of its divisors is an integer number (186732).

2^2221375 is an apocalyptic number.

2221375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2221375 is a deficient number, since it is larger than the sum of its proper divisors (766337).

2221375 is a wasteful number, since it uses less digits than its factorization.

2221375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395 (or 1385 counting only the distinct ones).

The product of its digits is 840, while the sum is 22.

The square root of 2221375 is about 1490.4277909379. The cubic root of 2221375 is about 130.4790021167.

Adding to 2221375 its reverse (5731222), we get a palindrome (7952597).

The spelling of 2221375 in words is "two million, two hundred twenty-one thousand, three hundred seventy-five".