424445761 has 2 divisors, whose sum is σ = 424445762. Its totient is φ = 424445760.

The previous prime is 424445719. The next prime is 424445779. The reversal of 424445761 is 167544424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423330625 + 1115136 = 20575^2 + 1056^2 .

It is a cyclic number.

It is not a de Polignac number, because 424445761 - 2⁹ = 424445249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 424445761.

It is not a weakly prime, because it can be changed into another prime (424442761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212222880 + 212222881.

It is an arithmetic number, because the mean of its divisors is an integer number (212222881).

Almost surely, 2^424445761 is an apocalyptic number.

It is an amenable number.

424445761 is a deficient number, since it is larger than the sum of its proper divisors (1).

424445761 is an equidigital number, since it uses as much as digits as its factorization.

424445761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 37.

The square root of 424445761 is about 20602.0814725115. The cubic root of 424445761 is about 751.5203299725.

It can be divided in two parts, 42444 and 5761, that added together give a triangular number (48205 = T₃₁₀).

The spelling of 424445761 in words is "four hundred twenty-four million, four hundred forty-five thousand, seven hundred sixty-one".