2543424491 has 2 divisors, whose sum is σ = 2543424492. Its totient is φ = 2543424490.

The previous prime is 2543424461. The next prime is 2543424517. The reversal of 2543424491 is 1944243452.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2543424491 - 2⁶ = 2543424427 is a prime.

It is not a weakly prime, because it can be changed into another prime (2543424431) 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, 1271712245 + 1271712246.

It is an arithmetic number, because the mean of its divisors is an integer number (1271712246).

Almost surely, 2^2543424491 is an apocalyptic number.

2543424491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2543424491 is an equidigital number, since it uses as much as digits as its factorization.

2543424491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 38.

The square root of 2543424491 is about 50432.3754249193. The cubic root of 2543424491 is about 1365.0218910827.

The spelling of 2543424491 in words is "two billion, five hundred forty-three million, four hundred twenty-four thousand, four hundred ninety-one".