5401243 has 2 divisors, whose sum is σ = 5401244. Its totient is φ = 5401242.

The previous prime is 5401241. The next prime is 5401247. The reversal of 5401243 is 3421045.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5401243 - 2¹ = 5401241 is a prime.

Together with 5401241, it forms a pair of twin primes.

5401243 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 5401243.

It is not a weakly prime, because it can be changed into another prime (5401241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2700621 + 2700622.

It is an arithmetic number, because the mean of its divisors is an integer number (2700622).

Almost surely, 2^5401243 is an apocalyptic number.

5401243 is a deficient number, since it is larger than the sum of its proper divisors (1).

5401243 is an equidigital number, since it uses as much as digits as its factorization.

5401243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 5401243 is about 2324.0574433520. The cubic root of 5401243 is about 175.4545245713.

Adding to 5401243 its reverse (3421045), we get a palindrome (8822288).

The spelling of 5401243 in words is "five million, four hundred one thousand, two hundred forty-three".