55371266561 has 8 divisors (see below), whose sum is σ = 59705424744. Its totient is φ = 51047798400.

The previous prime is 55371266557. The next prime is 55371266597. The reversal of 55371266561 is 16566217355.

It can be written as a sum of positive squares in 4 ways, for example, as 8654766961 + 46716499600 = 93031^2 + 216140^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55371266561 - 2² = 55371266557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55371266521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2661740 + ... + 2682461.

It is an arithmetic number, because the mean of its divisors is an integer number (7463178093).

Almost surely, 2^55371266561 is an apocalyptic number.

It is an amenable number.

55371266561 is a deficient number, since it is larger than the sum of its proper divisors (4334158183).

55371266561 is a wasteful number, since it uses less digits than its factorization.

55371266561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345011.

The product of its digits is 1134000, while the sum is 47.

The spelling of 55371266561 in words is "fifty-five billion, three hundred seventy-one million, two hundred sixty-six thousand, five hundred sixty-one".