2011605055 has 4 divisors (see below), whose sum is σ = 2413926072. Its totient is φ = 1609284040.

The previous prime is 2011605023. The next prime is 2011605061. The reversal of 2011605055 is 5505061102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2011605055 - 2⁵ = 2011605023 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, 201160501 + ... + 201160510.

It is an arithmetic number, because the mean of its divisors is an integer number (603481518).

Almost surely, 2^2011605055 is an apocalyptic number.

2011605055 is a deficient number, since it is larger than the sum of its proper divisors (402321017).

2011605055 is an equidigital number, since it uses as much as digits as its factorization.

2011605055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402321016.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 2011605055 is about 44850.9203361536. The cubic root of 2011605055 is about 1262.3532604670.

Adding to 2011605055 its reverse (5505061102), we get a palindrome (7516666157).

The spelling of 2011605055 in words is "two billion, eleven million, six hundred five thousand, fifty-five".