3500506 has 4 divisors (see below), whose sum is σ = 5250762. Its totient is φ = 1750252.

The previous prime is 3500477. The next prime is 3500509. The reversal of 3500506 is 6050053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6050053 = 31 ⋅195163.

It can be written as a sum of positive squares in only one way, i.e., 2752281 + 748225 = 1659^2 + 865^2 .

It is not an unprimeable number, because it can be changed into a prime (3500509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 875125 + ... + 875128.

Almost surely, 2^3500506 is an apocalyptic number.

3500506 is a deficient number, since it is larger than the sum of its proper divisors (1750256).

3500506 is a wasteful number, since it uses less digits than its factorization.

3500506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750255.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 3500506 is about 1870.9639226880. The cubic root of 3500506 is about 151.8367649746.

Adding to 3500506 its reverse (6050053), we get a palindrome (9550559).

The spelling of 3500506 in words is "three million, five hundred thousand, five hundred six".