1046561 has 4 divisors (see below), whose sum is σ = 1049412. Its totient is φ = 1043712.

The previous prime is 1046557. The next prime is 1046579. The reversal of 1046561 is 1656401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1656401 = 19 ⋅87179.

It can be written as a sum of positive squares in 2 ways, for example, as 616225 + 430336 = 785^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 1046561 - 2² = 1046557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1036561) 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, 776 + ... + 1641.

It is an arithmetic number, because the mean of its divisors is an integer number (262353).

2^1046561 is an apocalyptic number.

It is an amenable number.

1046561 is a deficient number, since it is larger than the sum of its proper divisors (2851).

1046561 is an equidigital number, since it uses as much as digits as its factorization.

1046561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1046561 is about 1023.0156401541. The cubic root of 1046561 is about 101.5285496464.

The spelling of 1046561 in words is "one million, forty-six thousand, five hundred sixty-one".