196515401 has 2 divisors, whose sum is σ = 196515402. Its totient is φ = 196515400.

The previous prime is 196515391. The next prime is 196515437. The reversal of 196515401 is 104515691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178917376 + 17598025 = 13376^2 + 4195^2 .

It is a cyclic number.

It is not a de Polignac number, because 196515401 - 2¹⁸ = 196253257 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (196515481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98257700 + 98257701.

It is an arithmetic number, because the mean of its divisors is an integer number (98257701).

Almost surely, 2^196515401 is an apocalyptic number.

It is an amenable number.

196515401 is a deficient number, since it is larger than the sum of its proper divisors (1).

196515401 is an equidigital number, since it uses as much as digits as its factorization.

196515401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 196515401 is about 14018.3950935904. The cubic root of 196515401 is about 581.3872865525.

It can be divided in two parts, 19651 and 5401, that added together give a palindrome (25052).

The spelling of 196515401 in words is "one hundred ninety-six million, five hundred fifteen thousand, four hundred one".