3561545 has 16 divisors (see below), whose sum is σ = 4645200. Its totient is φ = 2605824.

The previous prime is 3561541. The next prime is 3561581. The reversal of 3561545 is 5451653.

It can be written as a sum of positive squares in 8 ways, for example, as 219961 + 3341584 = 469^2 + 1828^2 .

It is not a de Polignac number, because 3561545 - 2² = 3561541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10031 + ... + 10379.

It is an arithmetic number, because the mean of its divisors is an integer number (290325).

Almost surely, 2^3561545 is an apocalyptic number.

It is an amenable number.

3561545 is a deficient number, since it is larger than the sum of its proper divisors (1083655).

3561545 is a wasteful number, since it uses less digits than its factorization.

3561545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524.

The product of its digits is 9000, while the sum is 29.

The square root of 3561545 is about 1887.2056061807. The cubic root of 3561545 is about 152.7142201254.

The spelling of 3561545 in words is "three million, five hundred sixty-one thousand, five hundred forty-five".