75131773 has 2 divisors, whose sum is σ = 75131774. Its totient is φ = 75131772.

The previous prime is 75131743. The next prime is 75131783. The reversal of 75131773 is 37713157.

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., 75116889 + 14884 = 8667^2 + 122^2 .

It is a cyclic number.

It is not a de Polignac number, because 75131773 - 2⁵ = 75131741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75131743) 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, 37565886 + 37565887.

It is an arithmetic number, because the mean of its divisors is an integer number (37565887).

Almost surely, 2^75131773 is an apocalyptic number.

It is an amenable number.

75131773 is a deficient number, since it is larger than the sum of its proper divisors (1).

75131773 is an equidigital number, since it uses as much as digits as its factorization.

75131773 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 75131773 is about 8667.8586167519. The cubic root of 75131773 is about 421.9631695955.

The spelling of 75131773 in words is "seventy-five million, one hundred thirty-one thousand, seven hundred seventy-three".