75124249 has 2 divisors, whose sum is σ = 75124250. Its totient is φ = 75124248.

The previous prime is 75124223. The next prime is 75124289. The reversal of 75124249 is 94242157.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68773849 + 6350400 = 8293^2 + 2520^2 .

It is a cyclic number.

It is not a de Polignac number, because 75124249 - 2⁷ = 75124121 is a prime.

It is not a weakly prime, because it can be changed into another prime (75124289) 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, 37562124 + 37562125.

It is an arithmetic number, because the mean of its divisors is an integer number (37562125).

Almost surely, 2^75124249 is an apocalyptic number.

It is an amenable number.

75124249 is a deficient number, since it is larger than the sum of its proper divisors (1).

75124249 is an equidigital number, since it uses as much as digits as its factorization.

75124249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 75124249 is about 8667.4245886538. The cubic root of 75124249 is about 421.9490834251.

The spelling of 75124249 in words is "seventy-five million, one hundred twenty-four thousand, two hundred forty-nine".