197484521 has 4 divisors (see below), whose sum is σ = 212675652. Its totient is φ = 182293392.

The previous prime is 197484481. The next prime is 197484523. The reversal of 197484521 is 125484791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12524521 + 184960000 = 3539^2 + 13600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197484521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197484523) 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, 7595546 + ... + 7595571.

It is an arithmetic number, because the mean of its divisors is an integer number (53168913).

Almost surely, 2^197484521 is an apocalyptic number.

It is an amenable number.

197484521 is a deficient number, since it is larger than the sum of its proper divisors (15191131).

197484521 is a wasteful number, since it uses less digits than its factorization.

197484521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15191130.

The product of its digits is 80640, while the sum is 41.

The square root of 197484521 is about 14052.9185936588. The cubic root of 197484521 is about 582.3414278525.

The spelling of 197484521 in words is "one hundred ninety-seven million, four hundred eighty-four thousand, five hundred twenty-one".