424525561 has 2 divisors, whose sum is σ = 424525562. Its totient is φ = 424525560.

The previous prime is 424525553. The next prime is 424525579. The reversal of 424525561 is 165525424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 351337536 + 73188025 = 18744^2 + 8555^2 .

It is a cyclic number.

It is not a de Polignac number, because 424525561 - 2³ = 424525553 is a prime.

It is not a weakly prime, because it can be changed into another prime (424525511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212262780 + 212262781.

It is an arithmetic number, because the mean of its divisors is an integer number (212262781).

Almost surely, 2^424525561 is an apocalyptic number.

It is an amenable number.

424525561 is a deficient number, since it is larger than the sum of its proper divisors (1).

424525561 is an equidigital number, since it uses as much as digits as its factorization.

424525561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48000, while the sum is 34.

The square root of 424525561 is about 20604.0180790059. The cubic root of 424525561 is about 751.5674247723.

The spelling of 424525561 in words is "four hundred twenty-four million, five hundred twenty-five thousand, five hundred sixty-one".