197953 has 4 divisors (see below), whose sum is σ = 226240. Its totient is φ = 169668.

The previous prime is 197947. The next prime is 197957. The reversal of 197953 is 359791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 359791 = 127 ⋅2833.

It is a cyclic number.

It is not a de Polignac number, because 197953 - 2⁵ = 197921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197957) 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, 14133 + ... + 14146.

It is an arithmetic number, because the mean of its divisors is an integer number (56560).

2¹⁹⁷⁹⁵³ is an apocalyptic number.

It is an amenable number.

197953 is a deficient number, since it is larger than the sum of its proper divisors (28287).

197953 is an equidigital number, since it uses as much as digits as its factorization.

197953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28286.

The product of its digits is 8505, while the sum is 34.

The square root of 197953 is about 444.9190937687. The cubic root of 197953 is about 58.2801547099.

The spelling of 197953 in words is "one hundred ninety-seven thousand, nine hundred fifty-three".