105117491 has 2 divisors, whose sum is σ = 105117492. Its totient is φ = 105117490.

The previous prime is 105117469. The next prime is 105117503. The reversal of 105117491 is 194711501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105117491 - 2¹⁴ = 105101107 is a prime.

It is a super-2 number, since 2×105117491² = 22099373828270162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105117401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52558745 + 52558746.

It is an arithmetic number, because the mean of its divisors is an integer number (52558746).

Almost surely, 2^105117491 is an apocalyptic number.

105117491 is a deficient number, since it is larger than the sum of its proper divisors (1).

105117491 is an equidigital number, since it uses as much as digits as its factorization.

105117491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 29.

The square root of 105117491 is about 10252.6821368850. The cubic root of 105117491 is about 471.9452964348.

Adding to 105117491 its reverse (194711501), we get a palindrome (299828992).

The spelling of 105117491 in words is "one hundred five million, one hundred seventeen thousand, four hundred ninety-one".