75284149 has 2 divisors, whose sum is σ = 75284150. Its totient is φ = 75284148.

The previous prime is 75284119. The next prime is 75284171. The reversal of 75284149 is 94148257.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53363025 + 21921124 = 7305^2 + 4682^2 .

It is a cyclic number.

It is not a de Polignac number, because 75284149 - 2¹³ = 75275957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75284119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37642074 + 37642075.

It is an arithmetic number, because the mean of its divisors is an integer number (37642075).

Almost surely, 2^75284149 is an apocalyptic number.

It is an amenable number.

75284149 is a deficient number, since it is larger than the sum of its proper divisors (1).

75284149 is an equidigital number, since it uses as much as digits as its factorization.

75284149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 75284149 is about 8676.6438788278. The cubic root of 75284149 is about 422.2482404737.

The spelling of 75284149 in words is "seventy-five million, two hundred eighty-four thousand, one hundred forty-nine".