3573561 has 4 divisors (see below), whose sum is σ = 4764752. Its totient is φ = 2382372.

The previous prime is 3573529. The next prime is 3573599. The reversal of 3573561 is 1653753.

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 not a de Polignac number, because 3573561 - 2⁵ = 3573529 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3573511) 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, 595591 + ... + 595596.

It is an arithmetic number, because the mean of its divisors is an integer number (1191188).

Almost surely, 2^3573561 is an apocalyptic number.

It is an amenable number.

3573561 is a deficient number, since it is larger than the sum of its proper divisors (1191191).

3573561 is a wasteful number, since it uses less digits than its factorization.

3573561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191190.

The product of its digits is 9450, while the sum is 30.

The square root of 3573561 is about 1890.3864684239. The cubic root of 3573561 is about 152.8857706053.

The spelling of 3573561 in words is "three million, five hundred seventy-three thousand, five hundred sixty-one".