3509557 has 6 divisors (see below), whose sum is σ = 3555618. Its totient is φ = 3464064.

The previous prime is 3509549. The next prime is 3509567. The reversal of 3509557 is 7559053.

It can be written as a sum of positive squares in 3 ways, for example, as 443556 + 3066001 = 666^2 + 1751^2 .

It is not a de Polignac number, because 3509557 - 2³ = 3509549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3509567) 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, 9223 + ... + 9595.

It is an arithmetic number, because the mean of its divisors is an integer number (592603).

Almost surely, 2^3509557 is an apocalyptic number.

It is an amenable number.

3509557 is a deficient number, since it is larger than the sum of its proper divisors (46061).

3509557 is an frugal number, since it uses more digits than its factorization.

3509557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 23625, while the sum is 34.

The square root of 3509557 is about 1873.3811678353. The cubic root of 3509557 is about 151.9675167198.

The spelling of 3509557 in words is "three million, five hundred nine thousand, five hundred fifty-seven".