75109 has 2 divisors, whose sum is σ = 75110. Its totient is φ = 75108.

The previous prime is 75083. The next prime is 75133. The reversal of 75109 is 90157.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72900 + 2209 = 270^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 75109 - 2⁹ = 74597 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37554 + 37555.

It is an arithmetic number, because the mean of its divisors is an integer number (37555).

2⁷⁵¹⁰⁹ is an apocalyptic number.

It is an amenable number.

75109 is a deficient number, since it is larger than the sum of its proper divisors (1).

75109 is an equidigital number, since it uses as much as digits as its factorization.

75109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315, while the sum is 22.

The square root of 75109 is about 274.0602123622. The cubic root of 75109 is about 42.1920531894.

The spelling of 75109 in words is "seventy-five thousand, one hundred nine".