513330145 has 8 divisors (see below), whose sum is σ = 616720104. Its totient is φ = 410181504.

The previous prime is 513330143. The next prime is 513330157. The reversal of 513330145 is 541033315.

It can be written as a sum of positive squares in 4 ways, for example, as 336759201 + 176570944 = 18351^2 + 13288^2 .

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 513330145 - 2¹ = 513330143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513330143) 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, 55614 + ... + 64183.

It is an arithmetic number, because the mean of its divisors is an integer number (77090013).

Almost surely, 2^513330145 is an apocalyptic number.

It is an amenable number.

513330145 is a deficient number, since it is larger than the sum of its proper divisors (103389959).

513330145 is a wasteful number, since it uses less digits than its factorization.

513330145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120659.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 513330145 is about 22656.7902625239. The cubic root of 513330145 is about 800.6921847817.

The spelling of 513330145 in words is "five hundred thirteen million, three hundred thirty thousand, one hundred forty-five".