201215415 has 16 divisors (see below), whose sum is σ = 338889600. Its totient is φ = 101666592.

The previous prime is 201215381. The next prime is 201215419. The reversal of 201215415 is 514512102.

It is not a de Polignac number, because 201215415 - 2⁸ = 201215159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201215391 and 201215400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201215419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352725 + ... + 353294.

It is an arithmetic number, because the mean of its divisors is an integer number (21180600).

Almost surely, 2^201215415 is an apocalyptic number.

201215415 is a deficient number, since it is larger than the sum of its proper divisors (137674185).

201215415 is a wasteful number, since it uses less digits than its factorization.

201215415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706046.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 201215415 is about 14185.0419456553. The cubic root of 201215415 is about 585.9857876862.

Adding to 201215415 its reverse (514512102), we get a palindrome (715727517).

The spelling of 201215415 in words is "two hundred one million, two hundred fifteen thousand, four hundred fifteen".