196505401 has 2 divisors, whose sum is σ = 196505402. Its totient is φ = 196505400.

The previous prime is 196505383. The next prime is 196505423. The reversal of 196505401 is 104505691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192099600 + 4405801 = 13860^2 + 2099^2 .

It is an emirp because it is prime and its reverse (104505691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196505401 - 2⁵ = 196505369 is a prime.

It is a super-2 number, since 2×196505401² = 77228745244341602, which contains 22 as substring.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 196505401 parts by 19824 straight cuts.

It is not a weakly prime, because it can be changed into another prime (196515401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98252700 + 98252701.

It is an arithmetic number, because the mean of its divisors is an integer number (98252701).

Almost surely, 2^196505401 is an apocalyptic number.

It is an amenable number.

196505401 is a deficient number, since it is larger than the sum of its proper divisors (1).

196505401 is an equidigital number, since it uses as much as digits as its factorization.

196505401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 196505401 is about 14018.0384148425. The cubic root of 196505401 is about 581.3774247784.

The spelling of 196505401 in words is "one hundred ninety-six million, five hundred five thousand, four hundred one".