214445 has 16 divisors (see below), whose sum is σ = 321408. Its totient is φ = 133440.

The previous prime is 214439. The next prime is 214451. The reversal of 214445 is 544412.

It is an interprime number because it is at equal distance from previous prime (214439) and next prime (214451).

It is not a de Polignac number, because 214445 - 2⁶ = 214381 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107 + ... + 663.

It is an arithmetic number, because the mean of its divisors is an integer number (20088).

2²¹⁴⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

214445 is a deficient number, since it is larger than the sum of its proper divisors (106963).

214445 is a wasteful number, since it uses less digits than its factorization.

214445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580.

The product of its digits is 640, while the sum is 20.

The square root of 214445 is about 463.0820661611. The cubic root of 214445 is about 59.8556716189.

Adding to 214445 its reverse (544412), we get a palindrome (758857).

The spelling of 214445 in words is "two hundred fourteen thousand, four hundred forty-five".