75286397 has 2 divisors, whose sum is σ = 75286398. Its totient is φ = 75286396.

The previous prime is 75286381. The next prime is 75286399. The reversal of 75286397 is 79368257.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55741156 + 19545241 = 7466^2 + 4421^2 .

It is a cyclic number.

It is not a de Polignac number, because 75286397 - 2⁴ = 75286381 is a prime.

Together with 75286399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75286399) 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, 37643198 + 37643199.

It is an arithmetic number, because the mean of its divisors is an integer number (37643199).

Almost surely, 2^75286397 is an apocalyptic number.

It is an amenable number.

75286397 is a deficient number, since it is larger than the sum of its proper divisors (1).

75286397 is an equidigital number, since it uses as much as digits as its factorization.

75286397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 47.

The square root of 75286397 is about 8676.7734210362. The cubic root of 75286397 is about 422.2524432380.

The spelling of 75286397 in words is "seventy-five million, two hundred eighty-six thousand, three hundred ninety-seven".