278255051 has 2 divisors, whose sum is σ = 278255052. Its totient is φ = 278255050.

The previous prime is 278255027. The next prime is 278255077. The reversal of 278255051 is 150552872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 278255051 - 2²² = 274060747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (278255251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139127525 + 139127526.

It is an arithmetic number, because the mean of its divisors is an integer number (139127526).

Almost surely, 2^278255051 is an apocalyptic number.

278255051 is a deficient number, since it is larger than the sum of its proper divisors (1).

278255051 is an equidigital number, since it uses as much as digits as its factorization.

278255051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 278255051 is about 16680.9787182887. The cubic root of 278255051 is about 652.8514186736.

The spelling of 278255051 in words is "two hundred seventy-eight million, two hundred fifty-five thousand, fifty-one".