20532263 has 2 divisors, whose sum is σ = 20532264. Its totient is φ = 20532262.

The previous prime is 20532233. The next prime is 20532269. The reversal of 20532263 is 36223502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20532263 - 2¹⁴ = 20515879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20532269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10266131 + 10266132.

It is an arithmetic number, because the mean of its divisors is an integer number (10266132).

Almost surely, 2^20532263 is an apocalyptic number.

20532263 is a deficient number, since it is larger than the sum of its proper divisors (1).

20532263 is an equidigital number, since it uses as much as digits as its factorization.

20532263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 20532263 is about 4531.2540206879. The cubic root of 20532263 is about 273.8286841781.

Adding to 20532263 its reverse (36223502), we get a palindrome (56755765).

The spelling of 20532263 in words is "twenty million, five hundred thirty-two thousand, two hundred sixty-three".