513236345 has 8 divisors (see below), whose sum is σ = 637121160. Its totient is φ = 396430720.

The previous prime is 513236267. The next prime is 513236363. The reversal of 513236345 is 543632315.

It can be written as a sum of positive squares in 4 ways, for example, as 7166329 + 506070016 = 2677^2 + 22496^2 .

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

It is not a de Polignac number, because 513236345 - 2¹⁴ = 513219961 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1769636 + ... + 1769925.

It is an arithmetic number, because the mean of its divisors is an integer number (79640145).

Almost surely, 2^513236345 is an apocalyptic number.

It is an amenable number.

513236345 is a deficient number, since it is larger than the sum of its proper divisors (123884815).

513236345 is a wasteful number, since it uses less digits than its factorization.

513236345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3539595.

The product of its digits is 32400, while the sum is 32.

The square root of 513236345 is about 22654.7201483488. The cubic root of 513236345 is about 800.6434120749.

The spelling of 513236345 in words is "five hundred thirteen million, two hundred thirty-six thousand, three hundred forty-five".