3561601541 has 4 divisors (see below), whose sum is σ = 3771107532. Its totient is φ = 3352095552.

The previous prime is 3561601531. The next prime is 3561601553. The reversal of 3561601541 is 1451061653.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1776201025 + 1785400516 = 42145^2 + 42254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3561601541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3561601498 and 3561601507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561601531) 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, 104752970 + ... + 104753003.

It is an arithmetic number, because the mean of its divisors is an integer number (942776883).

Almost surely, 2^3561601541 is an apocalyptic number.

It is an amenable number.

3561601541 is a deficient number, since it is larger than the sum of its proper divisors (209505991).

3561601541 is a wasteful number, since it uses less digits than its factorization.

3561601541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209505990.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 3561601541 is about 59679.1549956934. The cubic root of 3561601541 is about 1527.1502825493.

The spelling of 3561601541 in words is "three billion, five hundred sixty-one million, six hundred one thousand, five hundred forty-one".