215065156 has 6 divisors (see below), whose sum is σ = 376364030. Its totient is φ = 107532576.

The previous prime is 215065141. The next prime is 215065159. The reversal of 215065156 is 651560512.

It can be written as a sum of positive squares in only one way, i.e., 192654400 + 22410756 = 13880^2 + 4734^2 .

It is not an unprimeable number, because it can be changed into a prime (215065159) by changing a digit.

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 as a sum of consecutive naturals, namely, 26883141 + ... + 26883148.

Almost surely, 2^215065156 is an apocalyptic number.

It is an amenable number.

215065156 is a deficient number, since it is larger than the sum of its proper divisors (161298874).

215065156 is a wasteful number, since it uses less digits than its factorization.

215065156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53766293 (or 53766291 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 215065156 is about 14665.0999314700. The cubic root of 215065156 is about 599.1331519309.

It can be divided in two parts, 21506 and 5156, that added together give a palindrome (26662).

The spelling of 215065156 in words is "two hundred fifteen million, sixty-five thousand, one hundred fifty-six".