1040561 has 4 divisors (see below), whose sum is σ = 1042800. Its totient is φ = 1038324.

The previous prime is 1040531. The next prime is 1040563. The reversal of 1040561 is 1650401.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 1040561 - 2¹⁰ = 1039537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131 + ... + 1448.

It is an arithmetic number, because the mean of its divisors is an integer number (260700).

2^1040561 is an apocalyptic number.

It is an amenable number.

1040561 is a deficient number, since it is larger than the sum of its proper divisors (2239).

1040561 is an equidigital number, since it uses as much as digits as its factorization.

1040561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1040561 is about 1020.0789185156. The cubic root of 1040561 is about 101.3341544928.

Adding to 1040561 its reverse (1650401), we get a palindrome (2690962).

The spelling of 1040561 in words is "one million, forty thousand, five hundred sixty-one".