21714337 has 2 divisors, whose sum is σ = 21714338. Its totient is φ = 21714336.

The previous prime is 21714317. The next prime is 21714367. The reversal of 21714337 is 73341712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21492496 + 221841 = 4636^2 + 471^2 .

It is a cyclic number.

It is not a de Polignac number, because 21714337 - 2¹¹ = 21712289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21714317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10857168 + 10857169.

It is an arithmetic number, because the mean of its divisors is an integer number (10857169).

Almost surely, 2^21714337 is an apocalyptic number.

It is an amenable number.

21714337 is a deficient number, since it is larger than the sum of its proper divisors (1).

21714337 is an equidigital number, since it uses as much as digits as its factorization.

21714337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 28.

The square root of 21714337 is about 4659.8644830081. The cubic root of 21714337 is about 278.9858593485.

The spelling of 21714337 in words is "twenty-one million, seven hundred fourteen thousand, three hundred thirty-seven".