511305005 has 8 divisors (see below), whose sum is σ = 649658232. Its totient is φ = 384982528.

The previous prime is 511304993. The next prime is 511305007. The reversal of 511305005 is 500503115.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 147792649 + 363512356 = 12157^2 + 19066^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 511305005 - 2⁸ = 511304749 is a prime.

It is a super-2 number, since 2×511305005² = 522865616276100050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511305007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3007592 + ... + 3007761.

It is an arithmetic number, because the mean of its divisors is an integer number (81207279).

Almost surely, 2^511305005 is an apocalyptic number.

It is an amenable number.

511305005 is a deficient number, since it is larger than the sum of its proper divisors (138353227).

511305005 is a wasteful number, since it uses less digits than its factorization.

511305005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015375.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 511305005 is about 22612.0544179427. The cubic root of 511305005 is about 799.6378595301.

The spelling of 511305005 in words is "five hundred eleven million, three hundred five thousand, five".