1305305055 has 48 divisors (see below), whose sum is σ = 2358561504. Its totient is φ = 667180800.

The previous prime is 1305305047. The next prime is 1305305059. The reversal of 1305305055 is 5505035031.

1305305055 is a `hidden beast` number, since 1 + 30 + 530 + 50 + 55 = 666.

It is not a de Polignac number, because 1305305055 - 2³ = 1305305047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305305059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 105705 + ... + 117405.

It is an arithmetic number, because the mean of its divisors is an integer number (49136698).

Almost surely, 2^1305305055 is an apocalyptic number.

1305305055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1305305055 is a deficient number, since it is larger than the sum of its proper divisors (1053256449).

1305305055 is a wasteful number, since it uses less digits than its factorization.

1305305055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11816 (or 11813 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 27.

The square root of 1305305055 is about 36129.0057294689. The cubic root of 1305305055 is about 1092.8754577403.

The spelling of 1305305055 in words is "one billion, three hundred five million, three hundred five thousand, fifty-five".