201440055 has 16 divisors (see below), whose sum is σ = 341263584. Its totient is φ = 101114880.

The previous prime is 201440047. The next prime is 201440059. The reversal of 201440055 is 550044102.

201440055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201440055 - 2³ = 201440047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201440059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394726 + ... + 395235.

It is an arithmetic number, because the mean of its divisors is an integer number (21328974).

Almost surely, 2^201440055 is an apocalyptic number.

201440055 is a deficient number, since it is larger than the sum of its proper divisors (139823529).

201440055 is a wasteful number, since it uses less digits than its factorization.

201440055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789986.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 201440055 is about 14192.9579369489. The cubic root of 201440055 is about 586.2037744492.

Adding to 201440055 its reverse (550044102), we get a palindrome (751484157).

The spelling of 201440055 in words is "two hundred one million, four hundred forty thousand, fifty-five".