2005532545 has 8 divisors (see below), whose sum is σ = 2406997224. Its totient is φ = 1604187264.

The previous prime is 2005532539. The next prime is 2005532549. The reversal of 2005532545 is 5452355002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 397763136 + 1607769409 = 19944^2 + 40097^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2005532545 - 2¹⁵ = 2005499777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005532549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12597 + ... + 64573.

It is an arithmetic number, because the mean of its divisors is an integer number (300874653).

Almost surely, 2^2005532545 is an apocalyptic number.

It is an amenable number.

2005532545 is a deficient number, since it is larger than the sum of its proper divisors (401464679).

2005532545 is an equidigital number, since it uses as much as digits as its factorization.

2005532545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59699.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 2005532545 is about 44783.1725651500. The cubic root of 2005532545 is about 1261.0817419392.

Adding to 2005532545 its reverse (5452355002), we get a palindrome (7457887547).

The spelling of 2005532545 in words is "two billion, five million, five hundred thirty-two thousand, five hundred forty-five".