10215145 has 8 divisors (see below), whose sum is σ = 12589704. Its totient is φ = 7951104.

The previous prime is 10215119. The next prime is 10215157. The reversal of 10215145 is 54151201.

It can be written as a sum of positive squares in 4 ways, for example, as 3594816 + 6620329 = 1896^2 + 2573^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10215145 - 2⁷ = 10215017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27424 + ... + 27793.

It is an arithmetic number, because the mean of its divisors is an integer number (1573713).

Almost surely, 2^10215145 is an apocalyptic number.

It is an amenable number.

10215145 is a deficient number, since it is larger than the sum of its proper divisors (2374559).

10215145 is an equidigital number, since it uses as much as digits as its factorization.

10215145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55259.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 10215145 is about 3196.1140467762. The cubic root of 10215145 is about 216.9775720625.

Adding to 10215145 its reverse (54151201), we get a palindrome (64366346).

The spelling of 10215145 in words is "ten million, two hundred fifteen thousand, one hundred forty-five".