2016523 has 4 divisors (see below), whose sum is σ = 2135160. Its totient is φ = 1897888.

The previous prime is 2016517. The next prime is 2016529. The reversal of 2016523 is 3256102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3256102 = 2 ⋅1628051.

It is an interprime number because it is at equal distance from previous prime (2016517) and next prime (2016529).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2016523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2016523.

It is not an unprimeable number, because it can be changed into a prime (2016529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59293 + ... + 59326.

It is an arithmetic number, because the mean of its divisors is an integer number (533790).

2^2016523 is an apocalyptic number.

2016523 is a deficient number, since it is larger than the sum of its proper divisors (118637).

2016523 is a wasteful number, since it uses less digits than its factorization.

2016523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118636.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2016523 is about 1420.0433091987. The cubic root of 2016523 is about 126.3381151358.

It can be divided in two parts, 201 and 6523, that added together give a square (6724 = 82²).

The spelling of 2016523 in words is "two million, sixteen thousand, five hundred twenty-three".