20173051 has 2 divisors, whose sum is σ = 20173052. Its totient is φ = 20173050.

The previous prime is 20172989. The next prime is 20173081. The reversal of 20173051 is 15037102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20173051 - 2⁹ = 20172539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20173081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10086525 + 10086526.

It is an arithmetic number, because the mean of its divisors is an integer number (10086526).

Almost surely, 2^20173051 is an apocalyptic number.

20173051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20173051 is an equidigital number, since it uses as much as digits as its factorization.

20173051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 20173051 is about 4491.4419733533. The cubic root of 20173051 is about 272.2224022644. Note that the first 3 decimals are identical.

The spelling of 20173051 in words is "twenty million, one hundred seventy-three thousand, fifty-one".