2045522005 has 4 divisors (see below), whose sum is σ = 2454626412. Its totient is φ = 1636417600.

The previous prime is 2045521979. The next prime is 2045522029. The reversal of 2045522005 is 5002255402.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 979564804 + 1065957201 = 31298^2 + 32649^2 .

It is not a de Polignac number, because 2045522005 - 2⁹ = 2045521493 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, 204552196 + ... + 204552205.

It is an arithmetic number, because the mean of its divisors is an integer number (613656603).

Almost surely, 2^2045522005 is an apocalyptic number.

It is an amenable number.

2045522005 is a deficient number, since it is larger than the sum of its proper divisors (409104407).

2045522005 is an equidigital number, since it uses as much as digits as its factorization.

2045522005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409104406.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 2045522005 is about 45227.4474738515. The cubic root of 2045522005 is about 1269.4084510247.

Adding to 2045522005 its reverse (5002255402), we get a palindrome (7047777407).

The spelling of 2045522005 in words is "two billion, forty-five million, five hundred twenty-two thousand, five".