1456561 has 2 divisors, whose sum is σ = 1456562. Its totient is φ = 1456560.

The previous prime is 1456547. The next prime is 1456603. The reversal of 1456561 is 1656541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1366561 + 90000 = 1169^2 + 300^2 .

It is an emirp because it is prime and its reverse (1656541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1456561 - 2⁵ = 1456529 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (1456501) 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 as a sum of consecutive naturals, namely, 728280 + 728281.

It is an arithmetic number, because the mean of its divisors is an integer number (728281).

2^1456561 is an apocalyptic number.

It is an amenable number.

1456561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1456561 is an equidigital number, since it uses as much as digits as its factorization.

1456561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 28.

The square root of 1456561 is about 1206.8806900436. The cubic root of 1456561 is about 113.3555771411.

The spelling of 1456561 in words is "one million, four hundred fifty-six thousand, five hundred sixty-one".