105551617 has 4 divisors (see below), whose sum is σ = 106639876. Its totient is φ = 104463360.

The previous prime is 105551609. The next prime is 105551629. The reversal of 105551617 is 716155501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 716155501 = 6883 ⋅104047.

It can be written as a sum of positive squares in 2 ways, for example, as 81649296 + 23902321 = 9036^2 + 4889^2 .

It is a cyclic number.

It is not a de Polignac number, because 105551617 - 2³ = 105551609 is a prime.

It is a super-2 number, since 2×105551617² = 22282287702629378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105551647) 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 3 ways as a sum of consecutive naturals, for example, 543984 + ... + 544177.

It is an arithmetic number, because the mean of its divisors is an integer number (26659969).

Almost surely, 2^105551617 is an apocalyptic number.

It is an amenable number.

105551617 is a deficient number, since it is larger than the sum of its proper divisors (1088259).

105551617 is an equidigital number, since it uses as much as digits as its factorization.

105551617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088258.

The product of its (nonzero) digits is 5250, while the sum is 31.

The square root of 105551617 is about 10273.8316610698. The cubic root of 105551617 is about 472.5941016165.

The spelling of 105551617 in words is "one hundred five million, five hundred fifty-one thousand, six hundred seventeen".