278452043 has 2 divisors, whose sum is σ = 278452044. Its totient is φ = 278452042.

The previous prime is 278452021. The next prime is 278452073. The reversal of 278452043 is 340254872.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-278452043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 278451994 and 278452012.

It is not a weakly prime, because it can be changed into another prime (278452073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139226021 + 139226022.

It is an arithmetic number, because the mean of its divisors is an integer number (139226022).

Almost surely, 2^278452043 is an apocalyptic number.

278452043 is a deficient number, since it is larger than the sum of its proper divisors (1).

278452043 is an equidigital number, since it uses as much as digits as its factorization.

278452043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 278452043 is about 16686.8823631019. The cubic root of 278452043 is about 653.0054454306.

The spelling of 278452043 in words is "two hundred seventy-eight million, four hundred fifty-two thousand, forty-three".