255765447 has 18 divisors (see below), whose sum is σ = 429756288. Its totient is φ = 146151432.

The previous prime is 255765409. The next prime is 255765473. The reversal of 255765447 is 744567552.

255765447 is a `hidden beast` number, since 2 + 557 + 6 + 54 + 47 = 666.

It is not a de Polignac number, because 255765447 - 2¹⁶ = 255699911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255765047) 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 17 ways as a sum of consecutive naturals, for example, 289543 + ... + 290424.

Almost surely, 2^255765447 is an apocalyptic number.

255765447 is a deficient number, since it is larger than the sum of its proper divisors (173990841).

255765447 is a wasteful number, since it uses less digits than its factorization.

255765447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579987 (or 579977 counting only the distinct ones).

The product of its digits is 1176000, while the sum is 45.

The square root of 255765447 is about 15992.6685390525. The cubic root of 255765447 is about 634.7664398242.

The spelling of 255765447 in words is "two hundred fifty-five million, seven hundred sixty-five thousand, four hundred forty-seven".