55111055602 has 4 divisors (see below), whose sum is σ = 82666583406. Its totient is φ = 27555527800.

The previous prime is 55111055599. The next prime is 55111055603. The reversal of 55111055602 is 20655011155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20655011155 = 5 ⋅4131002231.

It can be written as a sum of positive squares in only one way, i.e., 38573352801 + 16537702801 = 196401^2 + 128599^2 .

It is not an unprimeable number, because it can be changed into a prime (55111055603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13777763899 + ... + 13777763902.

Almost surely, 2^55111055602 is an apocalyptic number.

55111055602 is a deficient number, since it is larger than the sum of its proper divisors (27555527804).

55111055602 is a wasteful number, since it uses less digits than its factorization.

55111055602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27555527803.

The product of its (nonzero) digits is 7500, while the sum is 31.

Adding to 55111055602 its reverse (20655011155), we get a palindrome (75766066757).

The spelling of 55111055602 in words is "fifty-five billion, one hundred eleven million, fifty-five thousand, six hundred two".