278755043 has 4 divisors (see below), whose sum is σ = 318577200. Its totient is φ = 238932888.

The previous prime is 278755033. The next prime is 278755049. The reversal of 278755043 is 340557872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 278755043 - 2⁸ = 278754787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (278755049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19911068 + ... + 19911081.

It is an arithmetic number, because the mean of its divisors is an integer number (79644300).

Almost surely, 2^278755043 is an apocalyptic number.

278755043 is a deficient number, since it is larger than the sum of its proper divisors (39822157).

278755043 is an equidigital number, since it uses as much as digits as its factorization.

278755043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39822156.

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 278755043 is about 16695.9588823164. The cubic root of 278755043 is about 653.2422174115.

The spelling of 278755043 in words is "two hundred seventy-eight million, seven hundred fifty-five thousand, forty-three".