5611663221 has 4 divisors (see below), whose sum is σ = 7482217632. Its totient is φ = 3741108812.

The previous prime is 5611663217. The next prime is 5611663223. The reversal of 5611663221 is 1223661165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5611663221 - 2² = 5611663217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5611663223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935277201 + ... + 935277206.

It is an arithmetic number, because the mean of its divisors is an integer number (1870554408).

Almost surely, 2^5611663221 is an apocalyptic number.

It is an amenable number.

5611663221 is a deficient number, since it is larger than the sum of its proper divisors (1870554411).

5611663221 is a wasteful number, since it uses less digits than its factorization.

5611663221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870554410.

The product of its digits is 12960, while the sum is 33.

The square root of 5611663221 is about 74911.0353753037. The cubic root of 5611663221 is about 1777.0399843766.

The spelling of 5611663221 in words is "five billion, six hundred eleven million, six hundred sixty-three thousand, two hundred twenty-one".