255505133 has 4 divisors (see below), whose sum is σ = 275159388. Its totient is φ = 235850880.

The previous prime is 255505127. The next prime is 255505169. The reversal of 255505133 is 331505552.

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

It can be written as a sum of positive squares in 2 ways, for example, as 115390564 + 140114569 = 10742^2 + 11837^2 .

It is a cyclic number.

It is not a de Polignac number, because 255505133 - 2¹⁴ = 255488749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 255505096 and 255505105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255505433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9827108 + ... + 9827133.

It is an arithmetic number, because the mean of its divisors is an integer number (68789847).

Almost surely, 2^255505133 is an apocalyptic number.

It is an amenable number.

255505133 is a deficient number, since it is larger than the sum of its proper divisors (19654255).

255505133 is a wasteful number, since it uses less digits than its factorization.

255505133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19654254.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 255505133 is about 15984.5279254659. The cubic root of 255505133 is about 634.5510149968.

The spelling of 255505133 in words is "two hundred fifty-five million, five hundred five thousand, one hundred thirty-three".