215045650 has 12 divisors (see below), whose sum is σ = 399985002. Its totient is φ = 86018240.

The previous prime is 215045641. The next prime is 215045657. The reversal of 215045650 is 56540512.

It can be written as a sum of positive squares in 3 ways, for example, as 202464441 + 12581209 = 14229^2 + 3547^2 .

It is not an unprimeable number, because it can be changed into a prime (215045657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2150407 + ... + 2150506.

Almost surely, 2^215045650 is an apocalyptic number.

215045650 is a deficient number, since it is larger than the sum of its proper divisors (184939352).

215045650 is a wasteful number, since it uses less digits than its factorization.

215045650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4300925 (or 4300920 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 215045650 is about 14664.4348680745. The cubic root of 215045650 is about 599.1150379713.

The spelling of 215045650 in words is "two hundred fifteen million, forty-five thousand, six hundred fifty".