197297055 has 12 divisors (see below), whose sum is σ = 341981640. Its totient is φ = 105225072.

The previous prime is 197297047. The next prime is 197297081. The reversal of 197297055 is 550792791.

It is not a de Polignac number, because 197297055 - 2³ = 197297047 is a prime.

It is a super-2 number, since 2×197297055² = 77852255823346050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4384379 = 197297055 / (1 + 9 + 7 + 2 + 9 + 7 + 0 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 197297055.

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, 2192145 + ... + 2192234.

It is an arithmetic number, because the mean of its divisors is an integer number (28498470).

Almost surely, 2^197297055 is an apocalyptic number.

197297055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

197297055 is a deficient number, since it is larger than the sum of its proper divisors (144684585).

197297055 is a wasteful number, since it uses less digits than its factorization.

197297055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384390 (or 4384387 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 45.

The square root of 197297055 is about 14046.2470076530. The cubic root of 197297055 is about 582.1571032289.

The spelling of 197297055 in words is "one hundred ninety-seven million, two hundred ninety-seven thousand, fifty-five".