75565117 has 2 divisors, whose sum is σ = 75565118. Its totient is φ = 75565116.

The previous prime is 75565093. The next prime is 75565141. The reversal of 75565117 is 71156557.

It is a balanced prime because it is at equal distance from previous prime (75565093) and next prime (75565141).

It can be written as a sum of positive squares in only one way, i.e., 74753316 + 811801 = 8646^2 + 901^2 .

It is an emirp because it is prime and its reverse (71156557) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75565117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75565157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37782558 + 37782559.

It is an arithmetic number, because the mean of its divisors is an integer number (37782559).

Almost surely, 2^75565117 is an apocalyptic number.

It is an amenable number.

75565117 is a deficient number, since it is larger than the sum of its proper divisors (1).

75565117 is an equidigital number, since it uses as much as digits as its factorization.

75565117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36750, while the sum is 37.

The square root of 75565117 is about 8692.8198531892. The cubic root of 75565117 is about 422.7728792833.

The spelling of 75565117 in words is "seventy-five million, five hundred sixty-five thousand, one hundred seventeen".