55511050505 has 16 divisors (see below), whose sum is σ = 69572666880. Its totient is φ = 42439412928.

The previous prime is 55511050499. The next prime is 55511050577. The reversal of 55511050505 is 50505011555.

It is a cyclic number.

It is not a de Polignac number, because 55511050505 - 2⁴ = 55511050489 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91970 + ... + 345659.

It is an arithmetic number, because the mean of its divisors is an integer number (4348291680).

Almost surely, 2^55511050505 is an apocalyptic number.

It is an amenable number.

55511050505 is a deficient number, since it is larger than the sum of its proper divisors (14061616375).

55511050505 is a wasteful number, since it uses less digits than its factorization.

55511050505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438760.

The product of its (nonzero) digits is 15625, while the sum is 32.

It can be divided in two parts, 55511050 and 505, that added together give a palindrome (55511555).

The spelling of 55511050505 in words is "fifty-five billion, five hundred eleven million, fifty thousand, five hundred five".