215115153 has 32 divisors (see below), whose sum is σ = 318494592. Its totient is φ = 128064000.

The previous prime is 215115119. The next prime is 215115217. The reversal of 215115153 is 351511512.

It is not a de Polignac number, because 215115153 - 2¹⁰ = 215114129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215115253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 776451 + ... + 776727.

It is an arithmetic number, because the mean of its divisors is an integer number (9952956).

Almost surely, 2^215115153 is an apocalyptic number.

It is an amenable number.

215115153 is a deficient number, since it is larger than the sum of its proper divisors (103379439).

215115153 is a wasteful number, since it uses less digits than its factorization.

215115153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625.

The product of its digits is 750, while the sum is 24.

The square root of 215115153 is about 14666.8044576861. The cubic root of 215115153 is about 599.1795759074.

Adding to 215115153 its reverse (351511512), we get a palindrome (566626665).

The spelling of 215115153 in words is "two hundred fifteen million, one hundred fifteen thousand, one hundred fifty-three".