278258201 has 8 divisors (see below), whose sum is σ = 309329664. Its totient is φ = 248567760.

The previous prime is 278258191. The next prime is 278258207. The reversal of 278258201 is 102852872.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-278258201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (278258207) 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, 344831 + ... + 345636.

It is an arithmetic number, because the mean of its divisors is an integer number (38666208).

Almost surely, 2^278258201 is an apocalyptic number.

It is an amenable number.

278258201 is a deficient number, since it is larger than the sum of its proper divisors (31071463).

278258201 is a wasteful number, since it uses less digits than its factorization.

278258201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690511.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 278258201 is about 16681.0731369418. The cubic root of 278258201 is about 652.8538822099.

The spelling of 278258201 in words is "two hundred seventy-eight million, two hundred fifty-eight thousand, two hundred one".