255565433 has 8 divisors (see below), whose sum is σ = 260205000. Its totient is φ = 250967808.

The previous prime is 255565421. The next prime is 255565493. The reversal of 255565433 is 334565552.

It can be written as a sum of positive squares in 4 ways, for example, as 5071504 + 250493929 = 2252^2 + 15827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255565433 - 2¹⁰ = 255564409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255565493) 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 7 ways as a sum of consecutive naturals, for example, 1943 + ... + 22691.

It is an arithmetic number, because the mean of its divisors is an integer number (32525625).

Almost surely, 2^255565433 is an apocalyptic number.

It is an amenable number.

255565433 is a deficient number, since it is larger than the sum of its proper divisors (4639567).

255565433 is a wasteful number, since it uses less digits than its factorization.

255565433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20971.

The product of its digits is 270000, while the sum is 38.

The square root of 255565433 is about 15986.4140131550. The cubic root of 255565433 is about 634.6009297364.

The spelling of 255565433 in words is "two hundred fifty-five million, five hundred sixty-five thousand, four hundred thirty-three".