20590223 has 2 divisors, whose sum is σ = 20590224. Its totient is φ = 20590222.

The previous prime is 20590211. The next prime is 20590279. The reversal of 20590223 is 32209502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20590223 - 2⁸ = 20589967 is a prime.

It is a super-4 number, since 4×20590223⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20590523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10295111 + 10295112.

It is an arithmetic number, because the mean of its divisors is an integer number (10295112).

Almost surely, 2^20590223 is an apocalyptic number.

20590223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20590223 is an equidigital number, since it uses as much as digits as its factorization.

20590223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20590223 is about 4537.6450940989. The cubic root of 20590223 is about 274.0861034384.

Adding to 20590223 its reverse (32209502), we get a palindrome (52799725).

The spelling of 20590223 in words is "twenty million, five hundred ninety thousand, two hundred twenty-three".