201563215 has 24 divisors (see below), whose sum is σ = 285999552. Its totient is φ = 135938880.

The previous prime is 201563189. The next prime is 201563227. The reversal of 201563215 is 512365102.

It is not a de Polignac number, because 201563215 - 2⁵ = 201563183 is a prime.

It is a super-2 number, since 2×201563215² = 81255459282272450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201563215.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 8202 + ... + 21688.

It is an arithmetic number, because the mean of its divisors is an integer number (11916648).

Almost surely, 2^201563215 is an apocalyptic number.

201563215 is a deficient number, since it is larger than the sum of its proper divisors (84436337).

201563215 is a wasteful number, since it uses less digits than its factorization.

201563215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13567 (or 13560 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 201563215 is about 14197.2960453743. The cubic root of 201563215 is about 586.3232180031.

The spelling of 201563215 in words is "two hundred one million, five hundred sixty-three thousand, two hundred fifteen".