511305305 has 16 divisors (see below), whose sum is σ = 702670464. Its totient is φ = 349883520.

The previous prime is 511305239. The next prime is 511305343. The reversal of 511305305 is 503503115.

It is not a de Polignac number, because 511305305 - 2¹⁰ = 511304281 is a prime.

It is a super-2 number, since 2×511305305² = 522866229842286050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2309 + ... + 32061.

It is an arithmetic number, because the mean of its divisors is an integer number (43916904).

Almost surely, 2^511305305 is an apocalyptic number.

It is an amenable number.

511305305 is a deficient number, since it is larger than the sum of its proper divisors (191365159).

511305305 is a wasteful number, since it uses less digits than its factorization.

511305305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30256.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 511305305 is about 22612.0610515716. The cubic root of 511305305 is about 799.6380159216.

The spelling of 511305305 in words is "five hundred eleven million, three hundred five thousand, three hundred five".