55105145101201 has 4 divisors (see below), whose sum is σ = 59344002416692. Its totient is φ = 50866287785712.

The previous prime is 55105145101159. The next prime is 55105145101213. The reversal of 55105145101201 is 10210154150155.

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 18775582286400 + 36329562814801 = 4333080^2 + 6027401^2 .

It is a cyclic number.

It is not a de Polignac number, because 55105145101201 - 2⁷ = 55105145101073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55105145101231) 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, 2119428657726 + ... + 2119428657751.

It is an arithmetic number, because the mean of its divisors is an integer number (14836000604173).

Almost surely, 2^{55105145101201} is an apocalyptic number.

It is an amenable number.

55105145101201 is a deficient number, since it is larger than the sum of its proper divisors (4238857315491).

55105145101201 is a wasteful number, since it uses less digits than its factorization.

55105145101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4238857315490.

The product of its (nonzero) digits is 5000, while the sum is 31.

Adding to 55105145101201 its reverse (10210154150155), we get a palindrome (65315299251356).

The spelling of 55105145101201 in words is "fifty-five trillion, one hundred five billion, one hundred forty-five million, one hundred one thousand, two hundred one".