278256053 has 8 divisors (see below), whose sum is σ = 291673536. Its totient is φ = 265154400.

The previous prime is 278256049. The next prime is 278256067. The reversal of 278256053 is 350652872.

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

It is a cyclic number.

It is not a de Polignac number, because 278256053 - 2² = 278256049 is a prime.

It is a super-2 number, since 2×278256053² = 154852862062277618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 278255998 and 278256016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278256023) 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, 77153 + ... + 80678.

It is an arithmetic number, because the mean of its divisors is an integer number (36459192).

Almost surely, 2^278256053 is an apocalyptic number.

It is an amenable number.

278256053 is a deficient number, since it is larger than the sum of its proper divisors (13417483).

278256053 is a wasteful number, since it uses less digits than its factorization.

278256053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157915.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 278256053 is about 16681.0087524706. The cubic root of 278256053 is about 652.8522023148.

The spelling of 278256053 in words is "two hundred seventy-eight million, two hundred fifty-six thousand, fifty-three".