3512561 has 8 divisors (see below), whose sum is σ = 3809064. Its totient is φ = 3219840.

The previous prime is 3512533. The next prime is 3512573. The reversal of 3512561 is 1652153.

It can be written as a sum of positive squares in 4 ways, for example, as 160000 + 3352561 = 400^2 + 1831^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3512561 - 2¹⁴ = 3496177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3512501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1181 + ... + 2901.

It is an arithmetic number, because the mean of its divisors is an integer number (476133).

Almost surely, 2^3512561 is an apocalyptic number.

It is an amenable number.

3512561 is a deficient number, since it is larger than the sum of its proper divisors (296503).

3512561 is a wasteful number, since it uses less digits than its factorization.

3512561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891.

The product of its digits is 900, while the sum is 23.

The square root of 3512561 is about 1874.1827552296. The cubic root of 3512561 is about 152.0108631433.

The spelling of 3512561 in words is "three million, five hundred twelve thousand, five hundred sixty-one".