20433055 has 4 divisors (see below), whose sum is σ = 24519672. Its totient is φ = 16346440.

The previous prime is 20433043. The next prime is 20433067. The reversal of 20433055 is 55033402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55033402 = 2 ⋅27516701.

It is an interprime number because it is at equal distance from previous prime (20433043) and next prime (20433067).

It is not a de Polignac number, because 20433055 - 2¹¹ = 20431007 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 3 ways as a sum of consecutive naturals, for example, 2043301 + ... + 2043310.

It is an arithmetic number, because the mean of its divisors is an integer number (6129918).

Almost surely, 2^20433055 is an apocalyptic number.

20433055 is a deficient number, since it is larger than the sum of its proper divisors (4086617).

20433055 is an equidigital number, since it uses as much as digits as its factorization.

20433055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4086616.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 20433055 is about 4520.2936851492. The cubic root of 20433055 is about 273.3869425221.

Adding to 20433055 its reverse (55033402), we get a palindrome (75466457).

The spelling of 20433055 in words is "twenty million, four hundred thirty-three thousand, fifty-five".