305093 has 2 divisors, whose sum is σ = 305094. Its totient is φ = 305092.

The previous prime is 305069. The next prime is 305101. The reversal of 305093 is 390503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158404 + 146689 = 398^2 + 383^2 .

It is an emirp because it is prime and its reverse (390503) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 305093 - 2⁶ = 305029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₂₆₄₁₇ and since 305093 and 26417 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 (305023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152546 + 152547.

It is an arithmetic number, because the mean of its divisors is an integer number (152547).

2³⁰⁵⁰⁹³ is an apocalyptic number.

It is an amenable number.

305093 is a deficient number, since it is larger than the sum of its proper divisors (1).

305093 is an equidigital number, since it uses as much as digits as its factorization.

305093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 20.

The square root of 305093 is about 552.3522426858. The cubic root of 305093 is about 67.3199959423.

Adding to 305093 its reverse (390503), we get a palindrome (695596).

The spelling of 305093 in words is "three hundred five thousand, ninety-three".