75361081 has 2 divisors, whose sum is σ = 75361082. Its totient is φ = 75361080.

The previous prime is 75361079. The next prime is 75361103. The reversal of 75361081 is 18016357.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51194025 + 24167056 = 7155^2 + 4916^2 .

It is a cyclic number.

It is not a de Polignac number, because 75361081 - 2¹ = 75361079 is a prime.

It is a super-2 number, since 2×75361081² = 11358585058977122, which contains 22 as substring.

Together with 75361079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (75361001) 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, 37680540 + 37680541.

It is an arithmetic number, because the mean of its divisors is an integer number (37680541).

Almost surely, 2^75361081 is an apocalyptic number.

It is an amenable number.

75361081 is a deficient number, since it is larger than the sum of its proper divisors (1).

75361081 is an equidigital number, since it uses as much as digits as its factorization.

75361081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 75361081 is about 8681.0760277744. The cubic root of 75361081 is about 422.3920217043.

The spelling of 75361081 in words is "seventy-five million, three hundred sixty-one thousand, eighty-one".