278852655 has 16 divisors (see below), whose sum is σ = 453479904. Its totient is φ = 146282880.

The previous prime is 278852653. The next prime is 278852659. The reversal of 278852655 is 556258872.

It is not a de Polignac number, because 278852655 - 2¹ = 278852653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278852653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151464 + ... + 153293.

It is an arithmetic number, because the mean of its divisors is an integer number (28342494).

Almost surely, 2^278852655 is an apocalyptic number.

278852655 is a deficient number, since it is larger than the sum of its proper divisors (174627249).

278852655 is a wasteful number, since it uses less digits than its factorization.

278852655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304826.

The product of its digits is 1344000, while the sum is 48.

The square root of 278852655 is about 16698.8818487945. The cubic root of 278852655 is about 653.3184573930.

The spelling of 278852655 in words is "two hundred seventy-eight million, eight hundred fifty-two thousand, six hundred fifty-five".