196571855 has 4 divisors (see below), whose sum is σ = 235886232. Its totient is φ = 157257480.

The previous prime is 196571821. The next prime is 196571857. The reversal of 196571855 is 558175691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 558175691 = 7027 ⋅79433.

It is not a de Polignac number, because 196571855 - 2¹² = 196567759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196571857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19657181 + ... + 19657190.

It is an arithmetic number, because the mean of its divisors is an integer number (58971558).

Almost surely, 2^196571855 is an apocalyptic number.

196571855 is a deficient number, since it is larger than the sum of its proper divisors (39314377).

196571855 is an equidigital number, since it uses as much as digits as its factorization.

196571855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39314376.

The product of its digits is 378000, while the sum is 47.

The square root of 196571855 is about 14020.4085175861. The cubic root of 196571855 is about 581.4429539374.

It can be divided in two parts, 19657 and 1855, that added together give a palindrome (21512).

The spelling of 196571855 in words is "one hundred ninety-six million, five hundred seventy-one thousand, eight hundred fifty-five".