255400543 has 4 divisors (see below), whose sum is σ = 255457480. Its totient is φ = 255343608.

The previous prime is 255400517. The next prime is 255400559. The reversal of 255400543 is 345004552.

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

It is a cyclic number.

It is not a de Polignac number, because 255400543 - 2¹⁷ = 255269471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255400513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21105 + ... + 30922.

It is an arithmetic number, because the mean of its divisors is an integer number (63864370).

Almost surely, 2^255400543 is an apocalyptic number.

255400543 is a deficient number, since it is larger than the sum of its proper divisors (56937).

255400543 is an equidigital number, since it uses as much as digits as its factorization.

255400543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56936.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 255400543 is about 15981.2559894396. The cubic root of 255400543 is about 634.4644195434.

The spelling of 255400543 in words is "two hundred fifty-five million, four hundred thousand, five hundred forty-three".