278253 has 12 divisors (see below), whose sum is σ = 411840. Its totient is φ = 180936.

The previous prime is 278237. The next prime is 278261. The reversal of 278253 is 352872.

It is not a de Polignac number, because 278253 - 2⁴ = 278237 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁷ + 7² + 2¹⁸ + 8² + 5⁶ + 3⁵ .

278253 is a lucky number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28 + ... + 746.

It is an arithmetic number, because the mean of its divisors is an integer number (34320).

2²⁷⁸²⁵³ is an apocalyptic number.

It is an amenable number.

278253 is a deficient number, since it is larger than the sum of its proper divisors (133587).

278253 is a wasteful number, since it uses less digits than its factorization.

278253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 765 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 278253 is about 527.4969194223. The cubic root of 278253 is about 65.2849814628.

The spelling of 278253 in words is "two hundred seventy-eight thousand, two hundred fifty-three".