278061 has 8 divisors (see below), whose sum is σ = 423744. Its totient is φ = 158880.

The previous prime is 278051. The next prime is 278063. The reversal of 278061 is 160872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 278061 - 2⁵ = 278029 is a prime.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 278061.

It is not an unprimeable number, because it can be changed into a prime (278063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6600 + ... + 6641.

It is an arithmetic number, because the mean of its divisors is an integer number (52968).

2²⁷⁸⁰⁶¹ is an apocalyptic number.

278061 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

278061 is a deficient number, since it is larger than the sum of its proper divisors (145683).

278061 is a wasteful number, since it uses less digits than its factorization.

278061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13251.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 278061 is about 527.3148964329. The cubic root of 278061 is about 65.2699620373.

The spelling of 278061 in words is "two hundred seventy-eight thousand, sixty-one".