197742550 has 12 divisors (see below), whose sum is σ = 367801236. Its totient is φ = 79097000.

The previous prime is 197742539. The next prime is 197742577. The reversal of 197742550 is 55247791.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1977376 + ... + 1977475.

It is an arithmetic number, because the mean of its divisors is an integer number (30650103).

Almost surely, 2^197742550 is an apocalyptic number.

197742550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197742550 is a deficient number, since it is larger than the sum of its proper divisors (170058686).

197742550 is a wasteful number, since it uses less digits than its factorization.

197742550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3954863 (or 3954858 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 40.

The square root of 197742550 is about 14062.0962164252. The cubic root of 197742550 is about 582.5949423734.

The spelling of 197742550 in words is "one hundred ninety-seven million, seven hundred forty-two thousand, five hundred fifty".