197980550 has 24 divisors (see below), whose sum is σ = 384256656. Its totient is φ = 75748640.

The previous prime is 197980543. The next prime is 197980571. The reversal of 197980550 is 55089791.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84929 + ... + 87228.

It is an arithmetic number, because the mean of its divisors is an integer number (16010694).

Almost surely, 2^197980550 is an apocalyptic number.

197980550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197980550 is a deficient number, since it is larger than the sum of its proper divisors (186276106).

197980550 is a wasteful number, since it uses less digits than its factorization.

197980550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172192 (or 172187 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 197980550 is about 14070.5561368412. The cubic root of 197980550 is about 582.8285828733.

The spelling of 197980550 in words is "one hundred ninety-seven million, nine hundred eighty thousand, five hundred fifty".