1654561 has 2 divisors, whose sum is σ = 1654562. Its totient is φ = 1654560.

The previous prime is 1654547. The next prime is 1654567.

1654561 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 844561 + 810000 = 919^2 + 900^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 1654561 - 2¹¹ = 1652513 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 (1654567) 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, 827280 + 827281.

It is an arithmetic number, because the mean of its divisors is an integer number (827281).

2^1654561 is an apocalyptic number.

It is an amenable number.

1654561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1654561 is an equidigital number, since it uses as much as digits as its factorization.

1654561 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 1654561 is about 1286.2973995154. The cubic root of 1654561 is about 118.2753552299.

The spelling of 1654561 in words is "one million, six hundred fifty-four thousand, five hundred sixty-one".