3426521 has 6 divisors (see below), whose sum is σ = 3986010. Its totient is φ = 2936976.

The previous prime is 3426509. The next prime is 3426529. The reversal of 3426521 is 1256243.

It can be written as a sum of positive squares in only one way, i.e., 1960000 + 1466521 = 1400^2 + 1211^2 .

It is not a de Polignac number, because 3426521 - 2¹⁴ = 3410137 is a prime.

It is a d-powerful number, because it can be written as 3⁶ + 4¹⁰ + 2 + 6⁷ + 5³ + 2²¹ + 1 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3426529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34916 + ... + 35013.

It is an arithmetic number, because the mean of its divisors is an integer number (664335).

Almost surely, 2^3426521 is an apocalyptic number.

It is an amenable number.

3426521 is a deficient number, since it is larger than the sum of its proper divisors (559489).

3426521 is an equidigital number, since it uses as much as digits as its factorization.

3426521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69943 (or 69936 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 3426521 is about 1851.0864377441. The cubic root of 3426521 is about 150.7594227659.

The spelling of 3426521 in words is "three million, four hundred twenty-six thousand, five hundred twenty-one".