55163537510656 has 27 divisors (see below), whose sum is σ = 110111829660133. Its totient is φ = 27581709337600.

The previous prime is 55163537510623. The next prime is 55163537510663. The reversal of 55163537510656 is 65601573536155.

It is a happy number.

The square root of 55163537510656 is 7427216.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 51782646272256 + 3380891238400 = 7196016^2 + 1838720^2 .

It is a super-3 number, since 3×55163537510656³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55163537510656.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 118603356 + ... + 119067556.

Almost surely, 2^{55163537510656} is an apocalyptic number.

55163537510656 is the 7427216-th square number.

It is an amenable number.

55163537510656 is a deficient number, since it is larger than the sum of its proper divisors (54948292149477).

55163537510656 is an frugal number, since it uses more digits than its factorization.

55163537510656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928418 (or 464203 counting only the distinct ones).

The product of its (nonzero) digits is 42525000, while the sum is 58.

The spelling of 55163537510656 in words is "fifty-five trillion, one hundred sixty-three billion, five hundred thirty-seven million, five hundred ten thousand, six hundred fifty-six".