2005533545 has 16 divisors (see below), whose sum is σ = 2468737920. Its totient is φ = 1563214464.

The previous prime is 2005533527. The next prime is 2005533557. The reversal of 2005533545 is 5453355002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2005533545 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76532 + ... + 99338.

It is an arithmetic number, because the mean of its divisors is an integer number (154296120).

Almost surely, 2^2005533545 is an apocalyptic number.

It is an amenable number.

2005533545 is a deficient number, since it is larger than the sum of its proper divisors (463204375).

2005533545 is a wasteful number, since it uses less digits than its factorization.

2005533545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23264.

The product of its (nonzero) digits is 45000, while the sum is 32.

The square root of 2005533545 is about 44783.1837300565. The cubic root of 2005533545 is about 1261.0819515397.

Adding to 2005533545 its reverse (5453355002), we get a palindrome (7458888547).

The spelling of 2005533545 in words is "two billion, five million, five hundred thirty-three thousand, five hundred forty-five".