55005055505 has 4 divisors (see below), whose sum is σ = 66006066612. Its totient is φ = 44004044400.

The previous prime is 55005055453. The next prime is 55005055513. The reversal of 55005055505 is 50555050055.

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 24546428929 + 30458626576 = 156673^2 + 174524^2 .

It is not a de Polignac number, because 55005055505 - 2⁸ = 55005055249 is a prime.

It is a super-2 number, since 2×55005055505² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5500505546 + ... + 5500505555.

It is an arithmetic number, because the mean of its divisors is an integer number (16501516653).

Almost surely, 2^55005055505 is an apocalyptic number.

It is an amenable number.

55005055505 is a deficient number, since it is larger than the sum of its proper divisors (11001011107).

55005055505 is a wasteful number, since it uses less digits than its factorization.

55005055505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11001011106.

The product of its (nonzero) digits is 78125, while the sum is 35.

The spelling of 55005055505 in words is "fifty-five billion, five million, fifty-five thousand, five hundred five".