105228493 has 2 divisors, whose sum is σ = 105228494. Its totient is φ = 105228492.

The previous prime is 105228463. The next prime is 105228499. The reversal of 105228493 is 394822501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83119689 + 22108804 = 9117^2 + 4702^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105228493 is a prime.

It is a super-2 number, since 2×105228493² = 22146071478102098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105228499) 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, 52614246 + 52614247.

It is an arithmetic number, because the mean of its divisors is an integer number (52614247).

Almost surely, 2^105228493 is an apocalyptic number.

It is an amenable number.

105228493 is a deficient number, since it is larger than the sum of its proper divisors (1).

105228493 is an equidigital number, since it uses as much as digits as its factorization.

105228493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 105228493 is about 10258.0940237453. The cubic root of 105228493 is about 472.1113596411. Note that the first 3 decimals are identical.

The spelling of 105228493 in words is "one hundred five million, two hundred twenty-eight thousand, four hundred ninety-three".