215055330 has 32 divisors (see below), whose sum is σ = 589866624. Its totient is φ = 49155456.

The previous prime is 215055311. The next prime is 215055343. The reversal of 215055330 is 33550512.

It is a super-2 number, since 2×215055330² = 92497589922817800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 215055330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511827 + ... + 512246.

It is an arithmetic number, because the mean of its divisors is an integer number (18433332).

Almost surely, 2^215055330 is an apocalyptic number.

215055330 is an abundant number, since it is smaller than the sum of its proper divisors (374811294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215055330 is a wasteful number, since it uses less digits than its factorization.

215055330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024090.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 215055330 is about 14664.7649145835. The cubic root of 215055330 is about 599.1240272976.

The spelling of 215055330 in words is "two hundred fifteen million, fifty-five thousand, three hundred thirty".