305055133 has 2 divisors, whose sum is σ = 305055134. Its totient is φ = 305055132.

The previous prime is 305055119. The next prime is 305055151. The reversal of 305055133 is 331550503.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167391844 + 137663289 = 12938^2 + 11733^2 .

It is a cyclic number.

It is not a de Polignac number, because 305055133 - 2¹³ = 305046941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 305055098 and 305055107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305055173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152527566 + 152527567.

It is an arithmetic number, because the mean of its divisors is an integer number (152527567).

Almost surely, 2^305055133 is an apocalyptic number.

It is an amenable number.

305055133 is a deficient number, since it is larger than the sum of its proper divisors (1).

305055133 is an equidigital number, since it uses as much as digits as its factorization.

305055133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3375, while the sum is 25.

The square root of 305055133 is about 17465.8275784459. The cubic root of 305055133 is about 673.1721065853.

The spelling of 305055133 in words is "three hundred five million, fifty-five thousand, one hundred thirty-three".