214253621 has 4 divisors (see below), whose sum is σ = 214284192. Its totient is φ = 214223052.

The previous prime is 214253597. The next prime is 214253629. The reversal of 214253621 is 126352412.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 214253621 - 2¹⁴ = 214237237 is a prime.

It is a super-2 number, since 2×214253621² = 91809228223223282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214253629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040 + ... + 20726.

It is an arithmetic number, because the mean of its divisors is an integer number (53571048).

Almost surely, 2^214253621 is an apocalyptic number.

It is an amenable number.

214253621 is a deficient number, since it is larger than the sum of its proper divisors (30571).

214253621 is a wasteful number, since it uses less digits than its factorization.

214253621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30570.

The product of its digits is 2880, while the sum is 26.

The square root of 214253621 is about 14637.4048587856. The cubic root of 214253621 is about 598.3786048170.

The spelling of 214253621 in words is "two hundred fourteen million, two hundred fifty-three thousand, six hundred twenty-one".