196552921 has 4 divisors (see below), whose sum is σ = 199321344. Its totient is φ = 193784500.

The previous prime is 196552879. The next prime is 196552973. The reversal of 196552921 is 129255691.

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.

It is a cyclic number.

It is not a de Polignac number, because 196552921 - 2¹⁹ = 196028633 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196553921) 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, 1384105 + ... + 1384246.

It is an arithmetic number, because the mean of its divisors is an integer number (49830336).

Almost surely, 2^196552921 is an apocalyptic number.

It is an amenable number.

196552921 is a deficient number, since it is larger than the sum of its proper divisors (2768423).

196552921 is an equidigital number, since it uses as much as digits as its factorization.

196552921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768422.

The product of its digits is 48600, while the sum is 40.

The square root of 196552921 is about 14019.7332713572. The cubic root of 196552921 is about 581.4242849468.

The spelling of 196552921 in words is "one hundred ninety-six million, five hundred fifty-two thousand, nine hundred twenty-one".