10215305 has 4 divisors (see below), whose sum is σ = 12258372. Its totient is φ = 8172240.

The previous prime is 10215287. The next prime is 10215307. The reversal of 10215305 is 50351201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50351201 = 877 ⋅57413.

It can be written as a sum of positive squares in 2 ways, for example, as 1149184 + 9066121 = 1072^2 + 3011^2 .

It is a de Polignac number, because none of the positive numbers 2^k-10215305 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10215307) 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, 1021526 + ... + 1021535.

It is an arithmetic number, because the mean of its divisors is an integer number (3064593).

Almost surely, 2^10215305 is an apocalyptic number.

It is an amenable number.

10215305 is a deficient number, since it is larger than the sum of its proper divisors (2043067).

10215305 is an equidigital number, since it uses as much as digits as its factorization.

10215305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043066.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 10215305 is about 3196.1390770741. The cubic root of 10215305 is about 216.9787048978.

Adding to 10215305 its reverse (50351201), we get a palindrome (60566506).

The spelling of 10215305 in words is "ten million, two hundred fifteen thousand, three hundred five".