5661551552 has 56 divisors (see below), whose sum is σ = 11337224976. Its totient is φ = 2805055488.

The previous prime is 5661551549. The next prime is 5661551611. The reversal of 5661551552 is 2551551665.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3791318 + ... + 3792810.

It is an arithmetic number, because the mean of its divisors is an integer number (202450446).

Almost surely, 2^5661551552 is an apocalyptic number.

It is an amenable number.

5661551552 is an abundant number, since it is smaller than the sum of its proper divisors (5675673424).

5661551552 is a wasteful number, since it uses less digits than its factorization.

5661551552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005 (or 1995 counting only the distinct ones).

The product of its digits is 225000, while the sum is 41.

The square root of 5661551552 is about 75243.2824377034. The cubic root of 5661551552 is about 1782.2904856930.

The spelling of 5661551552 in words is "five billion, six hundred sixty-one million, five hundred fifty-one thousand, five hundred fifty-two".