2005564451 has 8 divisors (see below), whose sum is σ = 2208337344. Its totient is φ = 1806199720.

The previous prime is 2005564439. The next prime is 2005564453. The reversal of 2005564451 is 1544655002.

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 2005564451 - 2¹⁴ = 2005548067 is a prime.

It is a super-2 number, since 2×2005564451² = 8044577534229862802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005564453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850805 + ... + 853158.

It is an arithmetic number, because the mean of its divisors is an integer number (276042168).

Almost surely, 2^2005564451 is an apocalyptic number.

2005564451 is a deficient number, since it is larger than the sum of its proper divisors (202772893).

2005564451 is a wasteful number, since it uses less digits than its factorization.

2005564451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704081.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 2005564451 is about 44783.5287912866. The cubic root of 2005564451 is about 1261.0884294166.

The spelling of 2005564451 in words is "two billion, five million, five hundred sixty-four thousand, four hundred fifty-one".