197954497 has 4 divisors (see below), whose sum is σ = 213181780. Its totient is φ = 182727216.

The previous prime is 197954479. The next prime is 197954513. The reversal of 197954497 is 794459791.

197954497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 794459791 = 61 ⋅13023931.

It can be written as a sum of positive squares in 2 ways, for example, as 102090816 + 95863681 = 10104^2 + 9791^2 .

It is a cyclic number.

It is not a de Polignac number, because 197954497 - 2¹¹ = 197952449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197954447) 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, 7613622 + ... + 7613647.

It is an arithmetic number, because the mean of its divisors is an integer number (53295445).

Almost surely, 2^197954497 is an apocalyptic number.

It is an amenable number.

197954497 is a deficient number, since it is larger than the sum of its proper divisors (15227283).

197954497 is a wasteful number, since it uses less digits than its factorization.

197954497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15227282.

The product of its digits is 2857680, while the sum is 55.

The square root of 197954497 is about 14069.6303078652. The cubic root of 197954497 is about 582.8030162218.

The spelling of 197954497 in words is "one hundred ninety-seven million, nine hundred fifty-four thousand, four hundred ninety-seven".