5455521661 has 8 divisors (see below), whose sum is σ = 5743461600. Its totient is φ = 5167662480.

The previous prime is 5455521637. The next prime is 5455521677. The reversal of 5455521661 is 1661255545.

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 5455521661 - 2¹⁵ = 5455488893 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 (5455521761) 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, 159630 + ... + 190768.

It is an arithmetic number, because the mean of its divisors is an integer number (717932700).

Almost surely, 2^5455521661 is an apocalyptic number.

It is an amenable number.

5455521661 is a deficient number, since it is larger than the sum of its proper divisors (287939939).

5455521661 is a wasteful number, since it uses less digits than its factorization.

5455521661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40379.

The product of its digits is 180000, while the sum is 40.

The square root of 5455521661 is about 73861.5032408629. The cubic root of 5455521661 is about 1760.4029790272.

The spelling of 5455521661 in words is "five billion, four hundred fifty-five million, five hundred twenty-one thousand, six hundred sixty-one".