55401687234017 has 4 divisors (see below), whose sum is σ = 55401781668756. Its totient is φ = 55401592799280.

The previous prime is 55401687234011. The next prime is 55401687234031. The reversal of 55401687234017 is 71043278610455.

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 49862367246241 + 5539319987776 = 7061329^2 + 2353576^2 .

It is a cyclic number.

It is not a de Polignac number, because 55401687234017 - 2²⁰ = 55401686185441 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 55401687234017.

It is not an unprimeable number, because it can be changed into a prime (55401687234011) 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, 46331834 + ... + 47512547.

It is an arithmetic number, because the mean of its divisors is an integer number (13850445417189).

Almost surely, 2^{55401687234017} is an apocalyptic number.

It is an amenable number.

55401687234017 is a deficient number, since it is larger than the sum of its proper divisors (94434739).

55401687234017 is an equidigital number, since it uses as much as digits as its factorization.

55401687234017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94434738.

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 55401687234017 in words is "fifty-five trillion, four hundred one billion, six hundred eighty-seven million, two hundred thirty-four thousand, seventeen".