255376139 has 2 divisors, whose sum is σ = 255376140. Its totient is φ = 255376138.

The previous prime is 255376129. The next prime is 255376181. The reversal of 255376139 is 931673552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255376139 - 2⁴ = 255376123 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 255376096 and 255376105.

It is not a weakly prime, because it can be changed into another prime (255376129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127688069 + 127688070.

It is an arithmetic number, because the mean of its divisors is an integer number (127688070).

Almost surely, 2^255376139 is an apocalyptic number.

255376139 is a deficient number, since it is larger than the sum of its proper divisors (1).

255376139 is an equidigital number, since it uses as much as digits as its factorization.

255376139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 41.

The square root of 255376139 is about 15980.4924517363. The cubic root of 255376139 is about 634.4442108121. Note that the first 3 decimals are identical.

The spelling of 255376139 in words is "two hundred fifty-five million, three hundred seventy-six thousand, one hundred thirty-nine".