43245173 has 2 divisors, whose sum is σ = 43245174. Its totient is φ = 43245172.

The previous prime is 43245131. The next prime is 43245187. The reversal of 43245173 is 37154234.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32341969 + 10903204 = 5687^2 + 3302^2 .

It is a cyclic number.

It is not a de Polignac number, because 43245173 - 2¹⁸ = 42983029 is a prime.

It is equal to p_2618480 and since 43245173 and 2618480 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43245373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21622586 + 21622587.

It is an arithmetic number, because the mean of its divisors is an integer number (21622587).

Almost surely, 2^43245173 is an apocalyptic number.

It is an amenable number.

43245173 is a deficient number, since it is larger than the sum of its proper divisors (1).

43245173 is an equidigital number, since it uses as much as digits as its factorization.

43245173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 29.

The square root of 43245173 is about 6576.1062187285. The cubic root of 43245173 is about 351.0043884377.

The spelling of 43245173 in words is "forty-three million, two hundred forty-five thousand, one hundred seventy-three".