20164451 has 2 divisors, whose sum is σ = 20164452. Its totient is φ = 20164450.

The previous prime is 20164439. The next prime is 20164481. The reversal of 20164451 is 15446102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20164451 - 2¹⁴ = 20148067 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20164411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10082225 + 10082226.

It is an arithmetic number, because the mean of its divisors is an integer number (10082226).

Almost surely, 2^20164451 is an apocalyptic number.

20164451 is a deficient number, since it is larger than the sum of its proper divisors (1).

20164451 is an equidigital number, since it uses as much as digits as its factorization.

20164451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20164451 is about 4490.4844950183. The cubic root of 20164451 is about 272.1837129354.

The spelling of 20164451 in words is "twenty million, one hundred sixty-four thousand, four hundred fifty-one".