278753 has 2 divisors, whose sum is σ = 278754. Its totient is φ = 278752.

The previous prime is 278743. The next prime is 278767. The reversal of 278753 is 357872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 277729 + 1024 = 527^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 278753 - 2⁶ = 278689 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (278743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139376 + 139377.

It is an arithmetic number, because the mean of its divisors is an integer number (139377).

2²⁷⁸⁷⁵³ is an apocalyptic number.

It is an amenable number.

278753 is a deficient number, since it is larger than the sum of its proper divisors (1).

278753 is an equidigital number, since it uses as much as digits as its factorization.

278753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 32.

The square root of 278753 is about 527.9706431233. The cubic root of 278753 is about 65.3240621534.

The spelling of 278753 in words is "two hundred seventy-eight thousand, seven hundred fifty-three".