75381311 has 2 divisors, whose sum is σ = 75381312. Its totient is φ = 75381310.

The previous prime is 75381301. The next prime is 75381331. The reversal of 75381311 is 11318357.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75381311 - 2¹⁸ = 75119167 is a prime.

It is equal to p_4415375 and since 75381311 and 4415375 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75381301) 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, 37690655 + 37690656.

It is an arithmetic number, because the mean of its divisors is an integer number (37690656).

Almost surely, 2^75381311 is an apocalyptic number.

75381311 is a deficient number, since it is larger than the sum of its proper divisors (1).

75381311 is an equidigital number, since it uses as much as digits as its factorization.

75381311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 29.

The square root of 75381311 is about 8682.2411277273. The cubic root of 75381311 is about 422.4298140944.

Adding to 75381311 its reverse (11318357), we get a palindrome (86699668).

The spelling of 75381311 in words is "seventy-five million, three hundred eighty-one thousand, three hundred eleven".