105630491 has 2 divisors, whose sum is σ = 105630492. Its totient is φ = 105630490.

The previous prime is 105630487. The next prime is 105630509. The reversal of 105630491 is 194036501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105630491 - 2² = 105630487 is a prime.

It is a super-2 number, since 2×105630491² = 22315601257802162, which contains 22 as substring.

It is a Chen prime.

It is equal to p_6066803 and since 105630491 and 6066803 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (105630461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52815245 + 52815246.

It is an arithmetic number, because the mean of its divisors is an integer number (52815246).

Almost surely, 2^105630491 is an apocalyptic number.

105630491 is a deficient number, since it is larger than the sum of its proper divisors (1).

105630491 is an equidigital number, since it uses as much as digits as its factorization.

105630491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 105630491 is about 10277.6695315621. The cubic root of 105630491 is about 472.7117884486.

Adding to 105630491 its reverse (194036501), we get a palindrome (299666992).

The spelling of 105630491 in words is "one hundred five million, six hundred thirty thousand, four hundred ninety-one".