105612197 has 2 divisors, whose sum is σ = 105612198. Its totient is φ = 105612196.

The previous prime is 105612193. The next prime is 105612259. The reversal of 105612197 is 791216501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105555076 + 57121 = 10274^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 105612197 - 2² = 105612193 is a prime.

It is a super-2 number, since 2×105612197² = 22307872310333618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105612191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52806098 + 52806099.

It is an arithmetic number, because the mean of its divisors is an integer number (52806099).

Almost surely, 2^105612197 is an apocalyptic number.

It is an amenable number.

105612197 is a deficient number, since it is larger than the sum of its proper divisors (1).

105612197 is an equidigital number, since it uses as much as digits as its factorization.

105612197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 105612197 is about 10276.7795052730. The cubic root of 105612197 is about 472.6844974374.

Adding to 105612197 its reverse (791216501), we get a palindrome (896828698).

The spelling of 105612197 in words is "one hundred five million, six hundred twelve thousand, one hundred ninety-seven".