255403743 has 32 divisors (see below), whose sum is σ = 398899200. Its totient is φ = 142343136.

The previous prime is 255403721. The next prime is 255403777. The reversal of 255403743 is 347304552.

It is not a de Polignac number, because 255403743 - 2⁸ = 255403487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255403243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171480 + ... + 172962.

It is an arithmetic number, because the mean of its divisors is an integer number (12465600).

Almost surely, 2^255403743 is an apocalyptic number.

255403743 is a deficient number, since it is larger than the sum of its proper divisors (143495457).

255403743 is a wasteful number, since it uses less digits than its factorization.

255403743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691.

The product of its (nonzero) digits is 50400, while the sum is 33.

The square root of 255403743 is about 15981.3561064135. The cubic root of 255403743 is about 634.4670693390.

The spelling of 255403743 in words is "two hundred fifty-five million, four hundred three thousand, seven hundred forty-three".