197987241 has 4 divisors (see below), whose sum is σ = 263982992. Its totient is φ = 131991492.

The previous prime is 197987227. The next prime is 197987269. The reversal of 197987241 is 142789791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 197987241 - 2¹³ = 197979049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197982241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32997871 + ... + 32997876.

It is an arithmetic number, because the mean of its divisors is an integer number (65995748).

Almost surely, 2^197987241 is an apocalyptic number.

It is an amenable number.

197987241 is a deficient number, since it is larger than the sum of its proper divisors (65995751).

197987241 is an equidigital number, since it uses as much as digits as its factorization.

197987241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65995750.

The product of its digits is 254016, while the sum is 48.

The square root of 197987241 is about 14070.7939008430. The cubic root of 197987241 is about 582.8351486061.

The spelling of 197987241 in words is "one hundred ninety-seven million, nine hundred eighty-seven thousand, two hundred forty-one".