255005155 has 4 divisors (see below), whose sum is σ = 306006192. Its totient is φ = 204004120.

The previous prime is 255005141. The next prime is 255005171. The reversal of 255005155 is 551500552.

It is a happy number.

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

It is not a de Polignac number, because 255005155 - 2¹¹ = 255003107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25500511 + ... + 25500520.

It is an arithmetic number, because the mean of its divisors is an integer number (76501548).

Almost surely, 2^255005155 is an apocalyptic number.

255005155 is a deficient number, since it is larger than the sum of its proper divisors (51001037).

255005155 is an equidigital number, since it uses as much as digits as its factorization.

255005155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51001036.

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 255005155 is about 15968.8808311666. The cubic root of 255005155 is about 634.1368436514.

The spelling of 255005155 in words is "two hundred fifty-five million, five thousand, one hundred fifty-five".