20175223 has 2 divisors, whose sum is σ = 20175224. Its totient is φ = 20175222.

The previous prime is 20175193. The next prime is 20175263. The reversal of 20175223 is 32257102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20175223 - 2⁵ = 20175191 is a prime.

It is equal to p_1281055 and since 20175223 and 1281055 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 20175194 and 20175203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20175263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10087611 + 10087612.

It is an arithmetic number, because the mean of its divisors is an integer number (10087612).

Almost surely, 2^20175223 is an apocalyptic number.

20175223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20175223 is an equidigital number, since it uses as much as digits as its factorization.

20175223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20175223 is about 4491.6837600169. The cubic root of 20175223 is about 272.2321718300.

The spelling of 20175223 in words is "twenty million, one hundred seventy-five thousand, two hundred twenty-three".