201505 has 8 divisors (see below), whose sum is σ = 244224. Its totient is φ = 159600.

The previous prime is 201499. The next prime is 201511. The reversal of 201505 is 505102.

It is an interprime number because it is at equal distance from previous prime (201499) and next prime (201511).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201505 - 2³ = 201497 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850 + ... + 1060.

It is an arithmetic number, because the mean of its divisors is an integer number (30528).

2²⁰¹⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

201505 is a deficient number, since it is larger than the sum of its proper divisors (42719).

201505 is a wasteful number, since it uses less digits than its factorization.

201505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 201505 is about 448.8930830387. The cubic root of 201505 is about 58.6266765750.

Adding to 201505 its reverse (505102), we get a palindrome (706607).

The spelling of 201505 in words is "two hundred one thousand, five hundred five".