20165055 has 8 divisors (see below), whose sum is σ = 32264112. Its totient is φ = 10754688.

The previous prime is 20165051. The next prime is 20165081. The reversal of 20165055 is 55056102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20165055 - 2² = 20165051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20165051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672154 + ... + 672183.

It is an arithmetic number, because the mean of its divisors is an integer number (4033014).

Almost surely, 2^20165055 is an apocalyptic number.

20165055 is a deficient number, since it is larger than the sum of its proper divisors (12099057).

20165055 is a wasteful number, since it uses less digits than its factorization.

20165055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344345.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 20165055 is about 4490.5517478368. The cubic root of 20165055 is about 272.1864305451.

It can be divided in two parts, 201 and 65055, that added together give a palindrome (65256).

The spelling of 20165055 in words is "twenty million, one hundred sixty-five thousand, fifty-five".