5511521656 has 8 divisors (see below), whose sum is σ = 10334103120. Its totient is φ = 2755760824.

The previous prime is 5511521647. The next prime is 5511521683. The reversal of 5511521656 is 6561251155.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344470096 + ... + 344470111.

It is an arithmetic number, because the mean of its divisors is an integer number (1291762890).

Almost surely, 2^5511521656 is an apocalyptic number.

It is an amenable number.

5511521656 is a deficient number, since it is larger than the sum of its proper divisors (4822581464).

5511521656 is a wasteful number, since it uses less digits than its factorization.

5511521656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688940213 (or 688940209 counting only the distinct ones).

The product of its digits is 45000, while the sum is 37.

The square root of 5511521656 is about 74239.6232210267. The cubic root of 5511521656 is about 1766.4058976370.

The spelling of 5511521656 in words is "five billion, five hundred eleven million, five hundred twenty-one thousand, six hundred fifty-six".