5505601661 has 8 divisors (see below), whose sum is σ = 6301669440. Its totient is φ = 4711922208.

The previous prime is 5505601639. The next prime is 5505601669. The reversal of 5505601661 is 1661065055.

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

It is not a de Polignac number, because 5505601661 - 2¹⁴ = 5505585277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5505601669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592136 + ... + 601361.

It is an arithmetic number, because the mean of its divisors is an integer number (787708680).

Almost surely, 2^5505601661 is an apocalyptic number.

It is an amenable number.

5505601661 is a deficient number, since it is larger than the sum of its proper divisors (796067779).

5505601661 is a wasteful number, since it uses less digits than its factorization.

5505601661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194163.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 5505601661 is about 74199.7416504936. The cubic root of 5505601661 is about 1765.7732314388.

The spelling of 5505601661 in words is "five billion, five hundred five million, six hundred one thousand, six hundred sixty-one".