5608821561 has 32 divisors (see below), whose sum is σ = 8923699200. Its totient is φ = 3063861504.

The previous prime is 5608821541. The next prime is 5608821583. The reversal of 5608821561 is 1651288065.

It is not a de Polignac number, because 5608821561 - 2⁶ = 5608821497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5608821521) 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 31 ways as a sum of consecutive naturals, for example, 1366290 + ... + 1370388.

It is an arithmetic number, because the mean of its divisors is an integer number (278865600).

Almost surely, 2^5608821561 is an apocalyptic number.

It is an amenable number.

5608821561 is a deficient number, since it is larger than the sum of its proper divisors (3314877639).

5608821561 is a wasteful number, since it uses less digits than its factorization.

5608821561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6965.

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 5608821561 is about 74892.0660751191. The cubic root of 5608821561 is about 1776.7399784869.

The spelling of 5608821561 in words is "five billion, six hundred eight million, eight hundred twenty-one thousand, five hundred sixty-one".