3527561 has 4 divisors (see below), whose sum is σ = 3536400. Its totient is φ = 3518724.

The previous prime is 3527549. The next prime is 3527581. The reversal of 3527561 is 1657253.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1657253 = 13 ⋅127481.

It is a cyclic number.

It is not a de Polignac number, because 3527561 - 2⁶ = 3527497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3527501) 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, 3791 + ... + 4628.

It is an arithmetic number, because the mean of its divisors is an integer number (884100).

Almost surely, 2^3527561 is an apocalyptic number.

It is an amenable number.

3527561 is a deficient number, since it is larger than the sum of its proper divisors (8839).

3527561 is an equidigital number, since it uses as much as digits as its factorization.

3527561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8838.

The product of its digits is 6300, while the sum is 29.

The square root of 3527561 is about 1878.1802362926. The cubic root of 3527561 is about 152.2269376730.

It can be divided in two parts, 35275 and 61, that multiplied together give a triangular number (2151775 = T₂₀₇₄).

The spelling of 3527561 in words is "three million, five hundred twenty-seven thousand, five hundred sixty-one".