10215155 has 8 divisors (see below), whose sum is σ = 12441552. Its totient is φ = 8049888.

The previous prime is 10215119. The next prime is 10215157. The reversal of 10215155 is 55151201.

It is a happy number.

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 10215155 - 2¹⁸ = 9953011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10215157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14912 + ... + 15581.

It is an arithmetic number, because the mean of its divisors is an integer number (1555194).

Almost surely, 2^10215155 is an apocalyptic number.

10215155 is a deficient number, since it is larger than the sum of its proper divisors (2226397).

10215155 is an equidigital number, since it uses as much as digits as its factorization.

10215155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30565.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 10215155 is about 3196.1156111755. The cubic root of 10215155 is about 216.9776428650.

Adding to 10215155 its reverse (55151201), we get a palindrome (65366356).

The spelling of 10215155 in words is "ten million, two hundred fifteen thousand, one hundred fifty-five".