20755073 has 2 divisors, whose sum is σ = 20755074. Its totient is φ = 20755072.

The previous prime is 20755069. The next prime is 20755093. The reversal of 20755073 is 37055702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14961424 + 5793649 = 3868^2 + 2407^2 .

It is a cyclic number.

It is not a de Polignac number, because 20755073 - 2² = 20755069 is a prime.

It is equal to p_1315478 and since 20755073 and 1315478 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20755043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10377536 + 10377537.

It is an arithmetic number, because the mean of its divisors is an integer number (10377537).

Almost surely, 2^20755073 is an apocalyptic number.

It is an amenable number.

20755073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20755073 is an equidigital number, since it uses as much as digits as its factorization.

20755073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7350, while the sum is 29.

The square root of 20755073 is about 4555.7735896333. The cubic root of 20755073 is about 274.8156251731.

The spelling of 20755073 in words is "twenty million, seven hundred fifty-five thousand, seventy-three".