5503451661 has 16 divisors (see below), whose sum is σ = 8507752320. Its totient is φ = 3509447040.

The previous prime is 5503451647. The next prime is 5503451671. The reversal of 5503451661 is 1661543055.

5503451661 is a `hidden beast` number, since 5 + 50 + 34 + 516 + 61 = 666.

5503451661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5503451661 - 2⁷ = 5503451533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5503451671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4430500 + ... + 4431741.

It is an arithmetic number, because the mean of its divisors is an integer number (531734520).

Almost surely, 2^5503451661 is an apocalyptic number.

It is an amenable number.

5503451661 is a deficient number, since it is larger than the sum of its proper divisors (3004300659).

5503451661 is a wasteful number, since it uses less digits than its factorization.

5503451661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8862273 (or 8862267 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 5503451661 is about 74185.2523147290. The cubic root of 5503451661 is about 1765.5433500096.

The spelling of 5503451661 in words is "five billion, five hundred three million, four hundred fifty-one thousand, six hundred sixty-one".