20755069 has 2 divisors, whose sum is σ = 20755070. Its totient is φ = 20755068.

The previous prime is 20755057. The next prime is 20755073. The reversal of 20755069 is 96055702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14062500 + 6692569 = 3750^2 + 2587^2 .

It is a cyclic number.

It is not a de Polignac number, because 20755069 - 2⁵ = 20755037 is a prime.

It is a super-2 number, since 2×20755069² = 861545778389522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20755019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10377534 + 10377535.

It is an arithmetic number, because the mean of its divisors is an integer number (10377535).

Almost surely, 2^20755069 is an apocalyptic number.

It is an amenable number.

20755069 is a deficient number, since it is larger than the sum of its proper divisors (1).

20755069 is an equidigital number, since it uses as much as digits as its factorization.

20755069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 20755069 is about 4555.7731506299. The cubic root of 20755069 is about 274.8156075186.

The spelling of 20755069 in words is "twenty million, seven hundred fifty-five thousand, sixty-nine".