3542521 has 4 divisors (see below), whose sum is σ = 3563172. Its totient is φ = 3521872.

The previous prime is 3542519. The next prime is 3542543. The reversal of 3542521 is 1252453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1252453 = 673 ⋅1861.

It can be written as a sum of positive squares in 2 ways, for example, as 3024121 + 518400 = 1739^2 + 720^2 .

It is a cyclic number.

It is not a de Polignac number, because 3542521 - 2¹ = 3542519 is a prime.

It is a super-3 number, since 3×3542521³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3542492 and 3542501.

It is not an unprimeable number, because it can be changed into a prime (3542551) 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 in 3 ways as a sum of consecutive naturals, for example, 10066 + ... + 10411.

It is an arithmetic number, because the mean of its divisors is an integer number (890793).

Almost surely, 2^3542521 is an apocalyptic number.

It is an amenable number.

3542521 is a deficient number, since it is larger than the sum of its proper divisors (20651).

3542521 is a wasteful number, since it uses less digits than its factorization.

3542521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20650.

The product of its digits is 1200, while the sum is 22.

The square root of 3542521 is about 1882.1586011811. The cubic root of 3542521 is about 152.4418267772.

Adding to 3542521 its reverse (1252453), we get a palindrome (4794974).

The spelling of 3542521 in words is "three million, five hundred forty-two thousand, five hundred twenty-one".