196551 has 6 divisors (see below), whose sum is σ = 283920. Its totient is φ = 131028.

The previous prime is 196549. The next prime is 196561. The reversal of 196551 is 155691.

196551 is a `hidden beast` number, since 1 + 9 + 655 + 1 = 666.

It is not a de Polignac number, because 196551 - 2¹ = 196549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10911 + ... + 10928.

It is an arithmetic number, because the mean of its divisors is an integer number (47320).

2¹⁹⁶⁵⁵¹ is an apocalyptic number.

196551 is a deficient number, since it is larger than the sum of its proper divisors (87369).

196551 is a wasteful number, since it uses less digits than its factorization.

196551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21845 (or 21842 counting only the distinct ones).

The product of its digits is 1350, while the sum is 27.

The square root of 196551 is about 443.3407267554. The cubic root of 196551 is about 58.1422390767.

It can be divided in two parts, 1965 and 51, that added together give a triangular number (2016 = T₆₃).

The spelling of 196551 in words is "one hundred ninety-six thousand, five hundred fifty-one".