201015015 has 16 divisors (see below), whose sum is σ = 324632448. Its totient is φ = 106205216.

The previous prime is 201014999. The next prime is 201015019. The reversal of 201015015 is 510510102.

It is a cyclic number.

It is not a de Polignac number, because 201015015 - 2⁴ = 201014999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 201014985 and 201015003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201015019) 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, 61017 + ... + 64226.

It is an arithmetic number, because the mean of its divisors is an integer number (20289528).

Almost surely, 2^201015015 is an apocalyptic number.

201015015 is a deficient number, since it is larger than the sum of its proper divisors (123617433).

201015015 is a wasteful number, since it uses less digits than its factorization.

201015015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125358.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 201015015 is about 14177.9764070900. The cubic root of 201015015 is about 585.7911860307.

Adding to 201015015 its reverse (510510102), we get a palindrome (711525117).

The spelling of 201015015 in words is "two hundred one million, fifteen thousand, fifteen".