20755227 has 4 divisors (see below), whose sum is σ = 27673640. Its totient is φ = 13836816.

The previous prime is 20755211. The next prime is 20755297. The reversal of 20755227 is 72255702.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20755227 - 2⁴ = 20755211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20755194 and 20755203.

It is not an unprimeable number, because it can be changed into a prime (20755297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3459202 + ... + 3459207.

It is an arithmetic number, because the mean of its divisors is an integer number (6918410).

Almost surely, 2^20755227 is an apocalyptic number.

20755227 is a deficient number, since it is larger than the sum of its proper divisors (6918413).

20755227 is an equidigital number, since it uses as much as digits as its factorization.

20755227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6918412.

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 20755227 is about 4555.7904912320. The cubic root of 20755227 is about 274.8163048704.

The spelling of 20755227 in words is "twenty million, seven hundred fifty-five thousand, two hundred twenty-seven".