105135517 has 4 divisors (see below), whose sum is σ = 107119260. Its totient is φ = 103151776.

The previous prime is 105135449. The next prime is 105135523. The reversal of 105135517 is 715531501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 715531501 = 521 ⋅1373381.

It can be written as a sum of positive squares in 2 ways, for example, as 95765796 + 9369721 = 9786^2 + 3061^2 .

It is a cyclic number.

It is not a de Polignac number, because 105135517 - 2¹⁵ = 105102749 is a prime.

It is a super-2 number, since 2×105135517² = 22106953869714578, 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 (105135917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991792 + ... + 991897.

It is an arithmetic number, because the mean of its divisors is an integer number (26779815).

Almost surely, 2^105135517 is an apocalyptic number.

It is an amenable number.

105135517 is a deficient number, since it is larger than the sum of its proper divisors (1983743).

105135517 is an equidigital number, since it uses as much as digits as its factorization.

105135517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983742.

The product of its (nonzero) digits is 2625, while the sum is 28.

The square root of 105135517 is about 10253.5611862416. The cubic root of 105135517 is about 471.9722719635.

The spelling of 105135517 in words is "one hundred five million, one hundred thirty-five thousand, five hundred seventeen".