509647145 has 16 divisors (see below), whose sum is σ = 700358400. Its totient is φ = 348765504.

The previous prime is 509647123. The next prime is 509647157. The reversal of 509647145 is 541746905.

It is a cyclic number.

It is not a de Polignac number, because 509647145 - 2¹⁴ = 509630761 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3131 + ... + 32079.

It is an arithmetic number, because the mean of its divisors is an integer number (43772400).

Almost surely, 2^509647145 is an apocalyptic number.

It is an amenable number.

509647145 is a deficient number, since it is larger than the sum of its proper divisors (190711255).

509647145 is a wasteful number, since it uses less digits than its factorization.

509647145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29464.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 509647145 is about 22575.3658885078. The cubic root of 509647145 is about 798.7726727351.

The spelling of 509647145 in words is "five hundred nine million, six hundred forty-seven thousand, one hundred forty-five".