3445521 has 4 divisors (see below), whose sum is σ = 4594032. Its totient is φ = 2297012.

The previous prime is 3445513. The next prime is 3445529. The reversal of 3445521 is 1255443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (3445513) and next prime (3445529).

It is a cyclic number.

It is not a de Polignac number, because 3445521 - 2³ = 3445513 is a prime.

It is a super-2 number, since 2×3445521² = 23743229922882, which contains 22 as substring.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 3445491 and 3445500.

It is not an unprimeable number, because it can be changed into a prime (3445529) 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, 574251 + ... + 574256.

It is an arithmetic number, because the mean of its divisors is an integer number (1148508).

Almost surely, 2^3445521 is an apocalyptic number.

It is an amenable number.

3445521 is a deficient number, since it is larger than the sum of its proper divisors (1148511).

3445521 is a wasteful number, since it uses less digits than its factorization.

3445521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148510.

The product of its digits is 2400, while the sum is 24.

The square root of 3445521 is about 1856.2114642465. The cubic root of 3445521 is about 151.0375621070.

The spelling of 3445521 in words is "three million, four hundred forty-five thousand, five hundred twenty-one".