21514067 has 2 divisors, whose sum is σ = 21514068. Its totient is φ = 21514066.

The previous prime is 21514037. The next prime is 21514079. The reversal of 21514067 is 76041512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21514067 - 2²⁰ = 20465491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21514037) 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 as a sum of consecutive naturals, namely, 10757033 + 10757034.

It is an arithmetic number, because the mean of its divisors is an integer number (10757034).

Almost surely, 2^21514067 is an apocalyptic number.

21514067 is a deficient number, since it is larger than the sum of its proper divisors (1).

21514067 is an equidigital number, since it uses as much as digits as its factorization.

21514067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 21514067 is about 4638.3258833333. The cubic root of 21514067 is about 278.1255191170.

Adding to 21514067 its reverse (76041512), we get a palindrome (97555579).

The spelling of 21514067 in words is "twenty-one million, five hundred fourteen thousand, sixty-seven".