75124289 has 2 divisors, whose sum is σ = 75124290. Its totient is φ = 75124288.

The previous prime is 75124249. The next prime is 75124303. The reversal of 75124289 is 98242157.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72114064 + 3010225 = 8492^2 + 1735^2 .

It is a cyclic number.

It is not a de Polignac number, because 75124289 - 2¹² = 75120193 is a prime.

It is not a weakly prime, because it can be changed into another prime (75124249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37562144 + 37562145.

It is an arithmetic number, because the mean of its divisors is an integer number (37562145).

Almost surely, 2^75124289 is an apocalyptic number.

It is an amenable number.

75124289 is a deficient number, since it is larger than the sum of its proper divisors (1).

75124289 is an equidigital number, since it uses as much as digits as its factorization.

75124289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 75124289 is about 8667.4268961440. The cubic root of 75124289 is about 421.9491583142.

The spelling of 75124289 in words is "seventy-five million, one hundred twenty-four thousand, two hundred eighty-nine".