215215552 has 28 divisors (see below), whose sum is σ = 427564296. Its totient is φ = 107482880.

The previous prime is 215215543. The next prime is 215215589. The reversal of 215215552 is 255512512.

It is a self number, because there is not a number n which added to its sum of digits gives 215215552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80802 + ... + 83422.

Almost surely, 2^215215552 is an apocalyptic number.

It is an amenable number.

215215552 is a deficient number, since it is larger than the sum of its proper divisors (212348744).

215215552 is a wasteful number, since it uses less digits than its factorization.

215215552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3916 (or 3906 counting only the distinct ones).

The product of its digits is 5000, while the sum is 28.

The square root of 215215552 is about 14670.2267194478. The cubic root of 215215552 is about 599.2727781961.

The spelling of 215215552 in words is "two hundred fifteen million, two hundred fifteen thousand, five hundred fifty-two".