197855 has 8 divisors (see below), whose sum is σ = 271392. Its totient is φ = 135648.

The previous prime is 197837. The next prime is 197887. The reversal of 197855 is 558791.

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 197855 - 2⁸ = 197599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 5653 = 197855 / (1 + 9 + 7 + 8 + 5 + 5).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2792 + ... + 2861.

It is an arithmetic number, because the mean of its divisors is an integer number (33924).

2¹⁹⁷⁸⁵⁵ is an apocalyptic number.

197855 is a deficient number, since it is larger than the sum of its proper divisors (73537).

197855 is an equidigital number, since it uses as much as digits as its factorization.

197855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5665.

The product of its digits is 12600, while the sum is 35.

The square root of 197855 is about 444.8089477517. The cubic root of 197855 is about 58.2705355950.

The spelling of 197855 in words is "one hundred ninety-seven thousand, eight hundred fifty-five".