513055281 has 8 divisors (see below), whose sum is σ = 684391680. Its totient is φ = 341877872.

The previous prime is 513055259. The next prime is 513055297. The reversal of 513055281 is 182550315.

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 513055281 - 2⁹ = 513054769 is a prime.

It is a super-2 number, since 2×513055281² = 526451442723977922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (513055241) 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, 32001 + ... + 45278.

It is an arithmetic number, because the mean of its divisors is an integer number (85548960).

Almost surely, 2^513055281 is an apocalyptic number.

It is an amenable number.

513055281 is a deficient number, since it is larger than the sum of its proper divisors (171336399).

513055281 is a wasteful number, since it uses less digits than its factorization.

513055281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79495.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 513055281 is about 22650.7236308247. The cubic root of 513055281 is about 800.5492483424.

The spelling of 513055281 in words is "five hundred thirteen million, fifty-five thousand, two hundred eighty-one".