5521211660 has 24 divisors (see below), whose sum is σ = 11603677680. Its totient is φ = 2206745024.

The previous prime is 5521211557. The next prime is 5521211677. The reversal of 5521211660 is 661121255.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82550 + ... + 133629.

It is an arithmetic number, because the mean of its divisors is an integer number (483486570).

Almost surely, 2^5521211660 is an apocalyptic number.

It is an amenable number.

5521211660 is an abundant number, since it is smaller than the sum of its proper divisors (6082466020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5521211660 is a wasteful number, since it uses less digits than its factorization.

5521211660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217465 (or 217463 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 5521211660 is about 74304.8562343001. The cubic root of 5521211660 is about 1767.4404854233.

The spelling of 5521211660 in words is "five billion, five hundred twenty-one million, two hundred eleven thousand, six hundred sixty".