198455 has 8 divisors (see below), whose sum is σ = 250800. Its totient is φ = 150336.
The previous prime is 198439. The next prime is 198461. The reversal of 198455 is 554891.
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 198455 - 24 = 198439 is a prime.
It is an Ulam number.
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 198455.
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, 950 + ... + 1139.
It is an arithmetic number, because the mean of its divisors is an integer number (31350).
2198455 is an apocalyptic number.
198455 is a deficient number, since it is larger than the sum of its proper divisors (52345).
198455 is a wasteful number, since it uses less digits than its factorization.
198455 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2113.
The product of its digits is 7200, while the sum is 32.
The square root of 198455 is about 445.4828840708. The cubic root of 198455 is about 58.3293784167.
It can be divided in two parts, 19845 and 5, that multiplied together give a square (99225 = 3152).
The spelling of 198455 in words is "one hundred ninety-eight thousand, four hundred fifty-five".
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