513145 has 8 divisors (see below), whose sum is σ = 652104. Its totient is φ = 386304.

The previous prime is 513137. The next prime is 513157. The reversal of 513145 is 541315.

It can be written as a sum of positive squares in 4 ways, for example, as 46656 + 466489 = 216^2 + 683^2 .

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 513145 - 2³ = 513137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2934 + ... + 3103.

It is an arithmetic number, because the mean of its divisors is an integer number (81513).

2⁵¹³¹⁴⁵ is an apocalyptic number.

It is an amenable number.

513145 is a deficient number, since it is larger than the sum of its proper divisors (138959).

513145 is a wasteful number, since it uses less digits than its factorization.

513145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6059.

The product of its digits is 300, while the sum is 19.

The square root of 513145 is about 716.3413990549. The cubic root of 513145 is about 80.0595910170.

The spelling of 513145 in words is "five hundred thirteen thousand, one hundred forty-five".