56551550556101 has 4 divisors (see below), whose sum is σ = 56551570574604. Its totient is φ = 56551530537600.

The previous prime is 56551550556077. The next prime is 56551550556107. The reversal of 56551550556101 is 10165505515565.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47654156433601 + 8897394122500 = 6903199^2 + 2982850^2 .

It is a cyclic number.

It is not a de Polignac number, because 56551550556101 - 2⁶ = 56551550556037 is a prime.

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 56551550556101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56551550556107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4903730 + ... + 11711091.

It is an arithmetic number, because the mean of its divisors is an integer number (14137892643651).

Almost surely, 2^{56551550556101} is an apocalyptic number.

It is an amenable number.

56551550556101 is a deficient number, since it is larger than the sum of its proper divisors (20018503).

56551550556101 is a wasteful number, since it uses less digits than its factorization.

56551550556101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20018502.

The product of its (nonzero) digits is 2812500, while the sum is 50.

The spelling of 56551550556101 in words is "fifty-six trillion, five hundred fifty-one billion, five hundred fifty million, five hundred fifty-six thousand, one hundred one".