197957097 has 24 divisors (see below), whose sum is σ = 308677824. Its totient is φ = 121525344.

The previous prime is 197957083. The next prime is 197957107. The reversal of 197957097 is 790759791.

It is a de Polignac number, because none of the positive numbers 2^k-197957097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197957897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52828 + ... + 56450.

It is an arithmetic number, because the mean of its divisors is an integer number (12861576).

Almost surely, 2^197957097 is an apocalyptic number.

It is an amenable number.

197957097 is a deficient number, since it is larger than the sum of its proper divisors (110720727).

197957097 is a wasteful number, since it uses less digits than its factorization.

197957097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109 (or 4106 counting only the distinct ones).

The product of its (nonzero) digits is 1250235, while the sum is 54.

The square root of 197957097 is about 14069.7227051566. The cubic root of 197957097 is about 582.8055677867.

The spelling of 197957097 in words is "one hundred ninety-seven million, nine hundred fifty-seven thousand, ninety-seven".