2005521104 has 10 divisors (see below), whose sum is σ = 3885697170. Its totient is φ = 1002760544.

The previous prime is 2005521103. The next prime is 2005521107. The reversal of 2005521104 is 4011255002.

It can be written as a sum of positive squares in only one way, i.e., 1925454400 + 80066704 = 43880^2 + 8948^2 .

It is a super-2 number, since 2×2005521104² = 8044229797178757632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005521103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62672519 + ... + 62672550.

It is an arithmetic number, because the mean of its divisors is an integer number (388569717).

Almost surely, 2^2005521104 is an apocalyptic number.

It is an amenable number.

2005521104 is a deficient number, since it is larger than the sum of its proper divisors (1880176066).

2005521104 is a wasteful number, since it uses less digits than its factorization.

2005521104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125345077 (or 125345071 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2005521104 is about 44783.0448272558. The cubic root of 2005521104 is about 1261.0793438956.

Adding to 2005521104 its reverse (4011255002), we get a palindrome (6016776106).

The spelling of 2005521104 in words is "two billion, five million, five hundred twenty-one thousand, one hundred four".