5565621671 has 8 divisors (see below), whose sum is σ = 5654083344. Its totient is φ = 5477794560.

The previous prime is 5565621643. The next prime is 5565621679. The reversal of 5565621671 is 1761265655.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5565621671 is a prime.

It is a super-2 number, since 2×5565621671² = 61952289169409664482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5565621679) 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, 140945 + ... + 176058.

It is an arithmetic number, because the mean of its divisors is an integer number (706760418).

Almost surely, 2^5565621671 is an apocalyptic number.

5565621671 is a deficient number, since it is larger than the sum of its proper divisors (88461673).

5565621671 is a wasteful number, since it uses less digits than its factorization.

5565621671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317281.

The product of its digits is 378000, while the sum is 44.

The square root of 5565621671 is about 74603.0942454802. The cubic root of 5565621671 is about 1772.1666542834.

The spelling of 5565621671 in words is "five billion, five hundred sixty-five million, six hundred twenty-one thousand, six hundred seventy-one".