3521423 has 4 divisors (see below), whose sum is σ = 3525480. Its totient is φ = 3517368.

The previous prime is 3521417. The next prime is 3521437. The reversal of 3521423 is 3241253.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3521423 - 2¹⁰ = 3520399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3521395 and 3521404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140 + ... + 2657.

It is an arithmetic number, because the mean of its divisors is an integer number (881370).

Almost surely, 2^3521423 is an apocalyptic number.

3521423 is a deficient number, since it is larger than the sum of its proper divisors (4057).

3521423 is a wasteful number, since it uses less digits than its factorization.

3521423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056.

The product of its digits is 720, while the sum is 20.

The square root of 3521423 is about 1876.5454963842. The cubic root of 3521423 is about 152.1385941588.

Adding to 3521423 its reverse (3241253), we get a palindrome (6762676).

The spelling of 3521423 in words is "three million, five hundred twenty-one thousand, four hundred twenty-three".