1561041 has 12 divisors (see below), whose sum is σ = 2332980. Its totient is φ = 1004640.

The previous prime is 1561039. The next prime is 1561069. The reversal of 1561041 is 1401651.

1561041 is a `hidden beast` number, since 15 + 610 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 342225 + 1218816 = 585^2 + 1104^2 .

It is not a de Polignac number, because 1561041 - 2¹ = 1561039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1561541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2730 + ... + 3251.

It is an arithmetic number, because the mean of its divisors is an integer number (194415).

2^1561041 is an apocalyptic number.

It is an amenable number.

1561041 is a deficient number, since it is larger than the sum of its proper divisors (771939).

1561041 is a wasteful number, since it uses less digits than its factorization.

1561041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6016 (or 6013 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1561041 is about 1249.4162637008. The cubic root of 1561041 is about 116.0035918428.

Adding to 1561041 its reverse (1401651), we get a palindrome (2962692).

It can be divided in two parts, 15610 and 41, that added together give a palindrome (15651).

The spelling of 1561041 in words is "one million, five hundred sixty-one thousand, forty-one".