278754241 has 4 divisors (see below), whose sum is σ = 279760852. Its totient is φ = 277747632.

The previous prime is 278754199. The next prime is 278754247. The reversal of 278754241 is 142457872.

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

It can be written as a sum of positive squares in 2 ways, for example, as 192654400 + 86099841 = 13880^2 + 9279^2 .

It is a cyclic number.

It is not a de Polignac number, because 278754241 - 2¹⁹ = 278229953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 278754194 and 278754203.

It is not an unprimeable number, because it can be changed into a prime (278754247) 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, 502890 + ... + 503443.

It is an arithmetic number, because the mean of its divisors is an integer number (69940213).

Almost surely, 2^278754241 is an apocalyptic number.

It is an amenable number.

278754241 is a deficient number, since it is larger than the sum of its proper divisors (1006611).

278754241 is a wasteful number, since it uses less digits than its factorization.

278754241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006610.

The product of its digits is 125440, while the sum is 40.

The square root of 278754241 is about 16695.9348645112. The cubic root of 278754241 is about 653.2415909346.

The spelling of 278754241 in words is "two hundred seventy-eight million, seven hundred fifty-four thousand, two hundred forty-one".