75771313 has 2 divisors, whose sum is σ = 75771314. Its totient is φ = 75771312.

The previous prime is 75771277. The next prime is 75771323. The reversal of 75771313 is 31317757.

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., 49730704 + 26040609 = 7052^2 + 5103^2 .

It is a cyclic number.

It is not a de Polignac number, because 75771313 - 2⁹ = 75770801 is a prime.

It is equal to p_4436908 and since 75771313 and 4436908 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (75771323) 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, 37885656 + 37885657.

It is an arithmetic number, because the mean of its divisors is an integer number (37885657).

Almost surely, 2^75771313 is an apocalyptic number.

It is an amenable number.

75771313 is a deficient number, since it is larger than the sum of its proper divisors (1).

75771313 is an equidigital number, since it uses as much as digits as its factorization.

75771313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15435, while the sum is 34.

The square root of 75771313 is about 8704.6719065109. The cubic root of 75771313 is about 423.1570728939.

The spelling of 75771313 in words is "seventy-five million, seven hundred seventy-one thousand, three hundred thirteen".