255131545 has 8 divisors (see below), whose sum is σ = 306272520. Its totient is φ = 204028800.

The previous prime is 255131543. The next prime is 255131567. The reversal of 255131545 is 545131552.

It can be written as a sum of positive squares in 4 ways, for example, as 107557641 + 147573904 = 10371^2 + 12148^2 .

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

It is not a de Polignac number, because 255131545 - 2¹ = 255131543 is a prime.

It is a super-3 number, since 3×255131545³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (255131543) 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, 8095 + ... + 23995.

It is an arithmetic number, because the mean of its divisors is an integer number (38284065).

Almost surely, 2^255131545 is an apocalyptic number.

It is an amenable number.

255131545 is a deficient number, since it is larger than the sum of its proper divisors (51140975).

255131545 is a wasteful number, since it uses less digits than its factorization.

255131545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19115.

The product of its digits is 15000, while the sum is 31.

The square root of 255131545 is about 15972.8377253386. The cubic root of 255131545 is about 634.2415935832.

The spelling of 255131545 in words is "two hundred fifty-five million, one hundred thirty-one thousand, five hundred forty-five".