400530601 has 2 divisors, whose sum is σ = 400530602. Its totient is φ = 400530600.

The previous prime is 400530589. The next prime is 400530607. The reversal of 400530601 is 106035004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234120601 + 166410000 = 15301^2 + 12900^2 .

It is a cyclic number.

It is not a de Polignac number, because 400530601 - 2¹¹ = 400528553 is a prime.

It is not a weakly prime, because it can be changed into another prime (400530607) 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, 200265300 + 200265301.

It is an arithmetic number, because the mean of its divisors is an integer number (200265301).

Almost surely, 2^400530601 is an apocalyptic number.

It is an amenable number.

400530601 is a deficient number, since it is larger than the sum of its proper divisors (1).

400530601 is an equidigital number, since it uses as much as digits as its factorization.

400530601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 400530601 is about 20013.2606288930. The cubic root of 400530601 is about 737.1319475791.

Adding to 400530601 its reverse (106035004), we get a palindrome (506565605).

The spelling of 400530601 in words is "four hundred million, five hundred thirty thousand, six hundred one".