305053 has 4 divisors (see below), whose sum is σ = 348640. Its totient is φ = 261468.

The previous prime is 305047. The next prime is 305069. The reversal of 305053 is 350503.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 305053 - 2⁵ = 305021 is a prime.

It is a Duffinian number.

305053 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21783 + ... + 21796.

It is an arithmetic number, because the mean of its divisors is an integer number (87160).

2³⁰⁵⁰⁵³ is an apocalyptic number.

It is an amenable number.

305053 is a deficient number, since it is larger than the sum of its proper divisors (43587).

305053 is an equidigital number, since it uses as much as digits as its factorization.

305053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43586.

The product of its (nonzero) digits is 225, while the sum is 16.

The square root of 305053 is about 552.3160327204. The cubic root of 305053 is about 67.3170537602.

Adding to 305053 its reverse (350503), we get a palindrome (655556).

The spelling of 305053 in words is "three hundred five thousand, fifty-three".