105145247 has 2 divisors, whose sum is σ = 105145248. Its totient is φ = 105145246.

The previous prime is 105145241. The next prime is 105145267. The reversal of 105145247 is 742541501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105145247 - 2¹⁰ = 105144223 is a prime.

It is a super-2 number, since 2×105145247² = 22111045933382018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105145241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52572623 + 52572624.

It is an arithmetic number, because the mean of its divisors is an integer number (52572624).

Almost surely, 2^105145247 is an apocalyptic number.

105145247 is a deficient number, since it is larger than the sum of its proper divisors (1).

105145247 is an equidigital number, since it uses as much as digits as its factorization.

105145247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 105145247 is about 10254.0356445645. The cubic root of 105145247 is about 471.9868314218.

Adding to 105145247 its reverse (742541501), we get a palindrome (847686748).

The spelling of 105145247 in words is "one hundred five million, one hundred forty-five thousand, two hundred forty-seven".