20534099 has 2 divisors, whose sum is σ = 20534100. Its totient is φ = 20534098.

The previous prime is 20534083. The next prime is 20534141. The reversal of 20534099 is 99043502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20534099 - 2⁴ = 20534083 is a prime.

It is not a weakly prime, because it can be changed into another prime (20534029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10267049 + 10267050.

It is an arithmetic number, because the mean of its divisors is an integer number (10267050).

Almost surely, 2^20534099 is an apocalyptic number.

20534099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20534099 is an equidigital number, since it uses as much as digits as its factorization.

20534099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 20534099 is about 4531.4566090828. The cubic root of 20534099 is about 273.8368458775.

The spelling of 20534099 in words is "twenty million, five hundred thirty-four thousand, ninety-nine".