255454139 has 2 divisors, whose sum is σ = 255454140. Its totient is φ = 255454138.

The previous prime is 255454103. The next prime is 255454141. The reversal of 255454139 is 931454552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255454139 - 2¹² = 255450043 is a prime.

Together with 255454141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (255454159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127727069 + 127727070.

It is an arithmetic number, because the mean of its divisors is an integer number (127727070).

Almost surely, 2^255454139 is an apocalyptic number.

255454139 is a deficient number, since it is larger than the sum of its proper divisors (1).

255454139 is an equidigital number, since it uses as much as digits as its factorization.

255454139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 38.

The square root of 255454139 is about 15982.9327408958. The cubic root of 255454139 is about 634.5087973878.

The spelling of 255454139 in words is "two hundred fifty-five million, four hundred fifty-four thousand, one hundred thirty-nine".