20067251 has 2 divisors, whose sum is σ = 20067252. Its totient is φ = 20067250.

The previous prime is 20067241. The next prime is 20067301. The reversal of 20067251 is 15276002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20067251 - 2¹⁴ = 20050867 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20067241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10033625 + 10033626.

It is an arithmetic number, because the mean of its divisors is an integer number (10033626).

Almost surely, 2^20067251 is an apocalyptic number.

20067251 is a deficient number, since it is larger than the sum of its proper divisors (1).

20067251 is an equidigital number, since it uses as much as digits as its factorization.

20067251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 20067251 is about 4479.6485353206. The cubic root of 20067251 is about 271.7456667801.

The spelling of 20067251 in words is "twenty million, sixty-seven thousand, two hundred fifty-one".