2005521354 has 24 divisors (see below), whose sum is σ = 4377019140. Its totient is φ = 663626688.

The previous prime is 2005521311. The next prime is 2005521359. The reversal of 2005521354 is 4531255002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1967366025 + 38155329 = 44355^2 + 6177^2 .

It is not an unprimeable number, because it can be changed into a prime (2005521359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 404169 + ... + 409100.

Almost surely, 2^2005521354 is an apocalyptic number.

2005521354 is an abundant number, since it is smaller than the sum of its proper divisors (2371497786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2005521354 is a wasteful number, since it uses less digits than its factorization.

2005521354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813414 (or 813411 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2005521354 is about 44783.0476184906. The cubic root of 2005521354 is about 1261.0793962959.

Adding to 2005521354 its reverse (4531255002), we get a palindrome (6536776356).

The spelling of 2005521354 in words is "two billion, five million, five hundred twenty-one thousand, three hundred fifty-four".