20541259 has 2 divisors, whose sum is σ = 20541260. Its totient is φ = 20541258.

The previous prime is 20541233. The next prime is 20541293. The reversal of 20541259 is 95214502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20541259 - 2⁹ = 20540747 is a prime.

It is not a weakly prime, because it can be changed into another prime (20542259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270629 + 10270630.

It is an arithmetic number, because the mean of its divisors is an integer number (10270630).

Almost surely, 2^20541259 is an apocalyptic number.

20541259 is a deficient number, since it is larger than the sum of its proper divisors (1).

20541259 is an equidigital number, since it uses as much as digits as its factorization.

20541259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 20541259 is about 4532.2465731688. The cubic root of 20541259 is about 273.8686700800.

The spelling of 20541259 in words is "twenty million, five hundred forty-one thousand, two hundred fifty-nine".