253791443 has 2 divisors, whose sum is σ = 253791444. Its totient is φ = 253791442.

The previous prime is 253791431. The next prime is 253791463. The reversal of 253791443 is 344197352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253791443 - 2⁴ = 253791427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253791397 and 253791406.

It is not a weakly prime, because it can be changed into another prime (253791463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126895721 + 126895722.

It is an arithmetic number, because the mean of its divisors is an integer number (126895722).

Almost surely, 2^253791443 is an apocalyptic number.

253791443 is a deficient number, since it is larger than the sum of its proper divisors (1).

253791443 is an equidigital number, since it uses as much as digits as its factorization.

253791443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 38.

The square root of 253791443 is about 15930.8330918380. The cubic root of 253791443 is about 633.1291727598.

The spelling of 253791443 in words is "two hundred fifty-three million, seven hundred ninety-one thousand, four hundred forty-three".