75055397 has 2 divisors, whose sum is σ = 75055398. Its totient is φ = 75055396.

The previous prime is 75055327. The next prime is 75055411. The reversal of 75055397 is 79355057.

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., 60202081 + 14853316 = 7759^2 + 3854^2 .

It is an emirp because it is prime and its reverse (79355057) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75055397 - 2¹⁰ = 75054373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75055327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37527698 + 37527699.

It is an arithmetic number, because the mean of its divisors is an integer number (37527699).

Almost surely, 2^75055397 is an apocalyptic number.

It is an amenable number.

75055397 is a deficient number, since it is larger than the sum of its proper divisors (1).

75055397 is an equidigital number, since it uses as much as digits as its factorization.

75055397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165375, while the sum is 41.

The square root of 75055397 is about 8663.4517947525. The cubic root of 75055397 is about 421.8201374071.

The spelling of 75055397 in words is "seventy-five million, fifty-five thousand, three hundred ninety-seven".