201015 has 16 divisors (see below), whose sum is σ = 357600. Its totient is φ = 107136.

The previous prime is 201011. The next prime is 201031. The reversal of 201015 is 510102.

It is a happy number.

201015 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201015 - 2² = 201011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

201015 is strictly pandigital in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 200988 and 201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201011) 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, 610 + ... + 879.

It is an arithmetic number, because the mean of its divisors is an integer number (22350).

2²⁰¹⁰¹⁵ is an apocalyptic number.

201015 is a deficient number, since it is larger than the sum of its proper divisors (156585).

201015 is a wasteful number, since it uses less digits than its factorization.

201015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1497 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 201015 is about 448.3469638572. The cubic root of 201015 is about 58.5791171460.

Adding to 201015 its reverse (510102), we get a palindrome (711117).

It can be divided in two parts, 2010 and 15, that added together give a square (2025 = 45²).

The spelling of 201015 in words is "two hundred one thousand, fifteen".