51055555106 has 4 divisors (see below), whose sum is σ = 76583332662. Its totient is φ = 25527777552.

The previous prime is 51055555073. The next prime is 51055555171. The reversal of 51055555106 is 60155555015.

It is a happy number.

51055555106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 27387271081 + 23668284025 = 165491^2 + 153845^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51055555106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12763888775 + ... + 12763888778.

Almost surely, 2^51055555106 is an apocalyptic number.

51055555106 is a deficient number, since it is larger than the sum of its proper divisors (25527777556).

51055555106 is a wasteful number, since it uses less digits than its factorization.

51055555106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25527777555.

The product of its (nonzero) digits is 93750, while the sum is 38.

Subtracting 51055555106 from its reverse (60155555015), we obtain a palindrome (9099999909).

The spelling of 51055555106 in words is "fifty-one billion, fifty-five million, five hundred fifty-five thousand, one hundred six".