105505010551 has 4 divisors (see below), whose sum is σ = 105880473504. Its totient is φ = 105129547600.

The previous prime is 105505010447. The next prime is 105505010561. The reversal of 105505010551 is 155010505501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105505010551 is a prime.

It is a super-2 number, since 2×105505010551² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105505010561) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 187731055 + ... + 187731616.

It is an arithmetic number, because the mean of its divisors is an integer number (26470118376).

Almost surely, 2^105505010551 is an apocalyptic number.

105505010551 is a deficient number, since it is larger than the sum of its proper divisors (375462953).

105505010551 is an equidigital number, since it uses as much as digits as its factorization.

105505010551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375462952.

The product of its (nonzero) digits is 3125, while the sum is 28.

It can be divided in two parts, 1055050 and 10551, that added together give a palindrome (1065601).

The spelling of 105505010551 in words is "one hundred five billion, five hundred five million, ten thousand, five hundred fifty-one".