75054550397 has 2 divisors, whose sum is σ = 75054550398. Its totient is φ = 75054550396.

The previous prime is 75054550391. The next prime is 75054550477. The reversal of 75054550397 is 79305545057.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47007009721 + 28047540676 = 216811^2 + 167474^2 .

It is a cyclic number.

It is not a de Polignac number, because 75054550397 - 2⁴ = 75054550381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75054550391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37527275198 + 37527275199.

It is an arithmetic number, because the mean of its divisors is an integer number (37527275199).

Almost surely, 2^75054550397 is an apocalyptic number.

It is an amenable number.

75054550397 is a deficient number, since it is larger than the sum of its proper divisors (1).

75054550397 is an equidigital number, since it uses as much as digits as its factorization.

75054550397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3307500, while the sum is 50.

The spelling of 75054550397 in words is "seventy-five billion, fifty-four million, five hundred fifty thousand, three hundred ninety-seven".