531810401 has 2 divisors, whose sum is σ = 531810402. Its totient is φ = 531810400.

The previous prime is 531810397. The next prime is 531810407. The reversal of 531810401 is 104018135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393982801 + 137827600 = 19849^2 + 11740^2 .

It is a cyclic number.

It is not a de Polignac number, because 531810401 - 2² = 531810397 is a prime.

It is a super-2 number, since 2×531810401² = 565644605223561602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (531810407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265905200 + 265905201.

It is an arithmetic number, because the mean of its divisors is an integer number (265905201).

Almost surely, 2^531810401 is an apocalyptic number.

It is an amenable number.

531810401 is a deficient number, since it is larger than the sum of its proper divisors (1).

531810401 is an equidigital number, since it uses as much as digits as its factorization.

531810401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 531810401 is about 23061.0147435016. The cubic root of 531810401 is about 810.1876316840.

Adding to 531810401 its reverse (104018135), we get a palindrome (635828536).

The spelling of 531810401 in words is "five hundred thirty-one million, eight hundred ten thousand, four hundred one".