3498521 has 4 divisors (see below), whose sum is σ = 3767652. Its totient is φ = 3229392.

The previous prime is 3498503. The next prime is 3498557. The reversal of 3498521 is 1258943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1258943 = 7 ⋅179849.

It can be written as a sum of positive squares in 2 ways, for example, as 739600 + 2758921 = 860^2 + 1661^2 .

It is a cyclic number.

It is not a de Polignac number, because 3498521 - 2⁶ = 3498457 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3498581) 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, 134546 + ... + 134571.

It is an arithmetic number, because the mean of its divisors is an integer number (941913).

Almost surely, 2^3498521 is an apocalyptic number.

It is an amenable number.

3498521 is a deficient number, since it is larger than the sum of its proper divisors (269131).

3498521 is a wasteful number, since it uses less digits than its factorization.

3498521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269130.

The product of its digits is 8640, while the sum is 32.

The square root of 3498521 is about 1870.4333722429. The cubic root of 3498521 is about 151.8080593183.

The spelling of 3498521 in words is "three million, four hundred ninety-eight thousand, five hundred twenty-one".