255746538 has 32 divisors (see below), whose sum is σ = 601758720. Its totient is φ = 80233920.

The previous prime is 255746537. The next prime is 255746539. The reversal of 255746538 is 835647552.

255746538 is a `hidden beast` number, since 2 + 557 + 4 + 65 + 38 = 666.

It is an interprime number because it is at equal distance from previous prime (255746537) and next prime (255746539).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 255746493 and 255746502.

It is not an unprimeable number, because it can be changed into a prime (255746537) 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 15 ways as a sum of consecutive naturals, for example, 138378 + ... + 140213.

It is an arithmetic number, because the mean of its divisors is an integer number (18804960).

Almost surely, 2^255746538 is an apocalyptic number.

255746538 is an abundant number, since it is smaller than the sum of its proper divisors (346012182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255746538 is a wasteful number, since it uses less digits than its factorization.

255746538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278619 (or 278613 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 255746538 is about 15992.0773509885. The cubic root of 255746538 is about 634.7507964622.

The spelling of 255746538 in words is "two hundred fifty-five million, seven hundred forty-six thousand, five hundred thirty-eight".