197448155 has 8 divisors (see below), whose sum is σ = 240822384. Its totient is φ = 155368800.

The previous prime is 197448143. The next prime is 197448157. The reversal of 197448155 is 551844791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 197448155 - 2⁶ = 197448091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197448157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323381 + ... + 323990.

It is an arithmetic number, because the mean of its divisors is an integer number (30102798).

Almost surely, 2^197448155 is an apocalyptic number.

197448155 is a deficient number, since it is larger than the sum of its proper divisors (43374229).

197448155 is an equidigital number, since it uses as much as digits as its factorization.

197448155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647437.

The product of its digits is 201600, while the sum is 44.

The square root of 197448155 is about 14051.6246391654. The cubic root of 197448155 is about 582.3056803615.

The spelling of 197448155 in words is "one hundred ninety-seven million, four hundred forty-eight thousand, one hundred fifty-five".