254340543 has 4 divisors (see below), whose sum is σ = 339120728. Its totient is φ = 169560360.

The previous prime is 254340533. The next prime is 254340599. The reversal of 254340543 is 345043452.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 254340543 - 2¹² = 254336447 is a prime.

It is a super-2 number, since 2×254340543² = 129378223627069698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 254340543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254340503) 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 in 3 ways as a sum of consecutive naturals, for example, 42390088 + ... + 42390093.

It is an arithmetic number, because the mean of its divisors is an integer number (84780182).

Almost surely, 2^254340543 is an apocalyptic number.

254340543 is a deficient number, since it is larger than the sum of its proper divisors (84780185).

254340543 is an equidigital number, since it uses as much as digits as its factorization.

254340543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84780184.

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 254340543 is about 15948.0576560282. The cubic root of 254340543 is about 633.5854539764.

Adding to 254340543 its reverse (345043452), we get a palindrome (599383995).

The spelling of 254340543 in words is "two hundred fifty-four million, three hundred forty thousand, five hundred forty-three".