197051243 has 4 divisors (see below), whose sum is σ = 197085000. Its totient is φ = 197017488.

The previous prime is 197051203. The next prime is 197051249. The reversal of 197051243 is 342150791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342150791 = 419 ⋅816589.

It is a cyclic number.

It is not a de Polignac number, because 197051243 - 2¹⁰ = 197050219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197051249) 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, 5618 + ... + 20631.

It is an arithmetic number, because the mean of its divisors is an integer number (49271250).

Almost surely, 2^197051243 is an apocalyptic number.

197051243 is a deficient number, since it is larger than the sum of its proper divisors (33757).

197051243 is an equidigital number, since it uses as much as digits as its factorization.

197051243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33756.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 197051243 is about 14037.4941852170. The cubic root of 197051243 is about 581.9152333020.

The spelling of 197051243 in words is "one hundred ninety-seven million, fifty-one thousand, two hundred forty-three".