20755159 has 2 divisors, whose sum is σ = 20755160. Its totient is φ = 20755158.

The previous prime is 20755157. The next prime is 20755199. The reversal of 20755159 is 95155702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20755159 - 2¹ = 20755157 is a prime.

Together with 20755157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20755157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10377579 + 10377580.

It is an arithmetic number, because the mean of its divisors is an integer number (10377580).

Almost surely, 2^20755159 is an apocalyptic number.

20755159 is a deficient number, since it is larger than the sum of its proper divisors (1).

20755159 is an equidigital number, since it uses as much as digits as its factorization.

20755159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 20755159 is about 4555.7830281961. The cubic root of 20755159 is about 274.8160047448.

The spelling of 20755159 in words is "twenty million, seven hundred fifty-five thousand, one hundred fifty-nine".