244828561 has 2 divisors, whose sum is σ = 244828562. Its totient is φ = 244828560.

The previous prime is 244828489. The next prime is 244828567. The reversal of 244828561 is 165828442.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233478400 + 11350161 = 15280^2 + 3369^2 .

It is a cyclic number.

It is not a de Polignac number, because 244828561 - 2¹⁷ = 244697489 is a prime.

It is not a weakly prime, because it can be changed into another prime (244828567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122414280 + 122414281.

It is an arithmetic number, because the mean of its divisors is an integer number (122414281).

Almost surely, 2^244828561 is an apocalyptic number.

It is an amenable number.

244828561 is a deficient number, since it is larger than the sum of its proper divisors (1).

244828561 is an equidigital number, since it uses as much as digits as its factorization.

244828561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122880, while the sum is 40.

The square root of 244828561 is about 15646.9984661596. The cubic root of 244828561 is about 625.5864881984.

The spelling of 244828561 in words is "two hundred forty-four million, eight hundred twenty-eight thousand, five hundred sixty-one".