3525561 has 12 divisors (see below), whose sum is σ = 5484388. Its totient is φ = 2169504.

The previous prime is 3525553. The next prime is 3525563. The reversal of 3525561 is 1655253.

It can be written as a sum of positive squares in 2 ways, for example, as 783225 + 2742336 = 885^2 + 1656^2 .

It is not a de Polignac number, because 3525561 - 2³ = 3525553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3525563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14950 + ... + 15183.

Almost surely, 2^3525561 is an apocalyptic number.

It is an amenable number.

3525561 is a deficient number, since it is larger than the sum of its proper divisors (1958827).

3525561 is a wasteful number, since it uses less digits than its factorization.

3525561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30152 (or 30149 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 3525561 is about 1877.6477305395. The cubic root of 3525561 is about 152.1981631711.

The spelling of 3525561 in words is "three million, five hundred twenty-five thousand, five hundred sixty-one".