20092001 has 2 divisors, whose sum is σ = 20092002. Its totient is φ = 20092000.

The previous prime is 20091989. The next prime is 20092019. The reversal of 20092001 is 10029002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16613776 + 3478225 = 4076^2 + 1865^2 .

It is a cyclic number.

It is not a de Polignac number, because 20092001 - 2¹⁰ = 20090977 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20092021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10046000 + 10046001.

It is an arithmetic number, because the mean of its divisors is an integer number (10046001).

Almost surely, 2^20092001 is an apocalyptic number.

It is an amenable number.

20092001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20092001 is an equidigital number, since it uses as much as digits as its factorization.

20092001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 20092001 is about 4482.4101775719. The cubic root of 20092001 is about 271.8573403071.

The spelling of 20092001 in words is "twenty million, ninety-two thousand, one".