14872021 has 2 divisors, whose sum is σ = 14872022. Its totient is φ = 14872020.

The previous prime is 14872019. The next prime is 14872031. The reversal of 14872021 is 12027841.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8059921 + 6812100 = 2839^2 + 2610^2 .

It is a cyclic number.

It is not a de Polignac number, because 14872021 - 2¹ = 14872019 is a prime.

Together with 14872019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14872031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7436010 + 7436011.

It is an arithmetic number, because the mean of its divisors is an integer number (7436011).

Almost surely, 2^14872021 is an apocalyptic number.

It is an amenable number.

14872021 is a deficient number, since it is larger than the sum of its proper divisors (1).

14872021 is an equidigital number, since it uses as much as digits as its factorization.

14872021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 14872021 is about 3856.4259360190. The cubic root of 14872021 is about 245.9178179665.

Adding to 14872021 its reverse (12027841), we get a palindrome (26899862).

The spelling of 14872021 in words is "fourteen million, eight hundred seventy-two thousand, twenty-one".