20365055 has 12 divisors (see below), whose sum is σ = 25779960. Its totient is φ = 15401232.

The previous prime is 20365049. The next prime is 20365117. The reversal of 20365055 is 55056302.

It is not a de Polignac number, because 20365055 - 2⁴ = 20365039 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43754 + ... + 44216.

It is an arithmetic number, because the mean of its divisors is an integer number (2148330).

Almost surely, 2^20365055 is an apocalyptic number.

20365055 is a deficient number, since it is larger than the sum of its proper divisors (5414905).

20365055 is an frugal number, since it uses more digits than its factorization.

20365055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 20365055 is about 4512.7657816466. The cubic root of 20365055 is about 273.0833336101.

The spelling of 20365055 in words is "twenty million, three hundred sixty-five thousand, fifty-five".