20923055 has 8 divisors (see below), whose sum is σ = 25410672. Its totient is φ = 16536448.

The previous prime is 20923033. The next prime is 20923103. The reversal of 20923055 is 55032902.

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

It is a cyclic number.

It is not a de Polignac number, because 20923055 - 2⁶ = 20922991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24794 + ... + 25623.

It is an arithmetic number, because the mean of its divisors is an integer number (3176334).

Almost surely, 2^20923055 is an apocalyptic number.

20923055 is a deficient number, since it is larger than the sum of its proper divisors (4487617).

20923055 is an equidigital number, since it uses as much as digits as its factorization.

20923055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50505.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 20923055 is about 4574.1726027775. The cubic root of 20923055 is about 275.5550442660. Note that the first 3 decimals are identical.

Adding to 20923055 its reverse (55032902), we get a palindrome (75955957).

The spelling of 20923055 in words is "twenty million, nine hundred twenty-three thousand, fifty-five".