20392055 has 4 divisors (see below), whose sum is σ = 24470472. Its totient is φ = 16313640.

The previous prime is 20392051. The next prime is 20392063. The reversal of 20392055 is 55029302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55029302 = 2 ⋅27514651.

It is not a de Polignac number, because 20392055 - 2² = 20392051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20392051) 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, 2039201 + ... + 2039210.

It is an arithmetic number, because the mean of its divisors is an integer number (6117618).

Almost surely, 2^20392055 is an apocalyptic number.

20392055 is a deficient number, since it is larger than the sum of its proper divisors (4078417).

20392055 is an equidigital number, since it uses as much as digits as its factorization.

20392055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4078416.

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

The square root of 20392055 is about 4515.7563043194. The cubic root of 20392055 is about 273.2039649877.

The spelling of 20392055 in words is "twenty million, three hundred ninety-two thousand, fifty-five".