55550500505 has 4 divisors (see below), whose sum is σ = 66660600612. Its totient is φ = 44440400400.

The previous prime is 55550500493. The next prime is 55550500541. The reversal of 55550500505 is 50500505555.

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 25865967241 + 29684533264 = 160829^2 + 172292^2 .

It is not a de Polignac number, because 55550500505 - 2⁸ = 55550500249 is a prime.

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, 5555050046 + ... + 5555050055.

It is an arithmetic number, because the mean of its divisors is an integer number (16665150153).

Almost surely, 2^55550500505 is an apocalyptic number.

It is an amenable number.

55550500505 is a deficient number, since it is larger than the sum of its proper divisors (11110100107).

55550500505 is a wasteful number, since it uses less digits than its factorization.

55550500505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110100106.

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

The spelling of 55550500505 in words is "fifty-five billion, five hundred fifty million, five hundred thousand, five hundred five".