305000055 has 24 divisors (see below), whose sum is σ = 532481040. Its totient is φ = 161493120.

The previous prime is 305000053. The next prime is 305000071. The reversal of 305000055 is 550000503.

It is not a de Polignac number, because 305000055 - 2¹ = 305000053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305000053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18126 + ... + 30635.

It is an arithmetic number, because the mean of its divisors is an integer number (22186710).

Almost surely, 2^305000055 is an apocalyptic number.

305000055 is a deficient number, since it is larger than the sum of its proper divisors (227480985).

305000055 is a wasteful number, since it uses less digits than its factorization.

305000055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48911 (or 48908 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 18.

The square root of 305000055 is about 17464.2507712183. The cubic root of 305000055 is about 673.1315901880.

Adding to 305000055 its reverse (550000503), we get a palindrome (855000558).

The spelling of 305000055 in words is "three hundred five million, fifty-five", and thus it is an aban number.