278255119 has 2 divisors, whose sum is σ = 278255120. Its totient is φ = 278255118.

The previous prime is 278255077. The next prime is 278255123. The reversal of 278255119 is 911552872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 278255119 - 2⁹ = 278254607 is a prime.

It is a super-2 number, since 2×278255119² = 154851822499408322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (278255149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139127559 + 139127560.

It is an arithmetic number, because the mean of its divisors is an integer number (139127560).

Almost surely, 2^278255119 is an apocalyptic number.

278255119 is a deficient number, since it is larger than the sum of its proper divisors (1).

278255119 is an equidigital number, since it uses as much as digits as its factorization.

278255119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 40.

The square root of 278255119 is about 16680.9807565383. The cubic root of 278255119 is about 652.8514718549.

The spelling of 278255119 in words is "two hundred seventy-eight million, two hundred fifty-five thousand, one hundred nineteen".