8540401 has 2 divisors, whose sum is σ = 8540402. Its totient is φ = 8540400.

The previous prime is 8540393. The next prime is 8540431. The reversal of 8540401 is 1040458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8151025 + 389376 = 2855^2 + 624^2 .

It is a cyclic number.

It is not a de Polignac number, because 8540401 - 2³ = 8540393 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8540431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4270200 + 4270201.

It is an arithmetic number, because the mean of its divisors is an integer number (4270201).

Almost surely, 2^8540401 is an apocalyptic number.

It is an amenable number.

8540401 is a deficient number, since it is larger than the sum of its proper divisors (1).

8540401 is an equidigital number, since it uses as much as digits as its factorization.

8540401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 8540401 is about 2922.3964481227. The cubic root of 8540401 is about 204.4055832743.

Adding to 8540401 its reverse (1040458), we get a palindrome (9580859).

The spelling of 8540401 in words is "eight million, five hundred forty thousand, four hundred one".