2001505 has 16 divisors (see below), whose sum is σ = 2648448. Its totient is φ = 1440000.

The previous prime is 2001487. The next prime is 2001509. The reversal of 2001505 is 5051002.

It is not a de Polignac number, because 2001505 - 2¹⁷ = 1870433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001509) 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, 8185 + ... + 8425.

It is an arithmetic number, because the mean of its divisors is an integer number (165528).

2^2001505 is an apocalyptic number.

It is an amenable number.

2001505 is a deficient number, since it is larger than the sum of its proper divisors (646943).

2001505 is a wasteful number, since it uses less digits than its factorization.

2001505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408.

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

The square root of 2001505 is about 1414.7455601627. The cubic root of 2001505 is about 126.0237000854.

Adding to 2001505 its reverse (5051002), we get a palindrome (7052507).

The spelling of 2001505 in words is "two million, one thousand, five hundred five".