105516551 has 12 divisors (see below), whose sum is σ = 125358048. Its totient is φ = 88516512.

The previous prime is 105516547. The next prime is 105516577. The reversal of 105516551 is 155615501.

It is a happy number.

It is not a de Polignac number, because 105516551 - 2² = 105516547 is a prime.

It is a super-2 number, since 2×105516551² = 22267485069871202, which 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 (105516581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20606 + ... + 25211.

It is an arithmetic number, because the mean of its divisors is an integer number (10446504).

Almost surely, 2^105516551 is an apocalyptic number.

105516551 is a deficient number, since it is larger than the sum of its proper divisors (19841497).

105516551 is an equidigital number, since it uses as much as digits as its factorization.

105516551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45878 (or 45871 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 105516551 is about 10272.1249505640. The cubic root of 105516551 is about 472.5417612837.

The spelling of 105516551 in words is "one hundred five million, five hundred sixteen thousand, five hundred fifty-one".