10500005 has 4 divisors (see below), whose sum is σ = 12600012. Its totient is φ = 8400000.

The previous prime is 10499981. The next prime is 10500013. The reversal of 10500005 is 50000501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50000501 = 1511 ⋅33091.

It can be written as a sum of positive squares in 2 ways, for example, as 8282884 + 2217121 = 2878^2 + 1489^2 .

It is not a de Polignac number, because 10500005 - 2¹⁰ = 10498981 is a prime.

It is a super-2 number, since 2×10500005² = 220500210000050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1049996 + ... + 1050005.

It is an arithmetic number, because the mean of its divisors is an integer number (3150003).

Almost surely, 2^10500005 is an apocalyptic number.

It is an amenable number.

10500005 is a deficient number, since it is larger than the sum of its proper divisors (2100007).

10500005 is an equidigital number, since it uses as much as digits as its factorization.

10500005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100006.

The product of its (nonzero) digits is 25, while the sum is 11.

The square root of 10500005 is about 3240.3711207206. The cubic root of 10500005 is about 218.9759917525.

Adding to 10500005 its reverse (50000501), we get a palindrome (60500506).

The spelling of 10500005 in words is "ten million, five hundred thousand, five".