509555045 has 8 divisors (see below), whose sum is σ = 611752824. Its totient is φ = 407452864.

The previous prime is 509554979. The next prime is 509555069. The reversal of 509555045 is 540555905.

It can be written as a sum of positive squares in 4 ways, for example, as 93354244 + 416200801 = 9662^2 + 20401^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-509555045 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11594 + ... + 33963.

It is an arithmetic number, because the mean of its divisors is an integer number (76469103).

Almost surely, 2^509555045 is an apocalyptic number.

It is an amenable number.

509555045 is a deficient number, since it is larger than the sum of its proper divisors (102197779).

509555045 is a wasteful number, since it uses less digits than its factorization.

509555045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47799.

The product of its (nonzero) digits is 112500, while the sum is 38.

The square root of 509555045 is about 22573.3259622945. The cubic root of 509555045 is about 798.7245535636.

The spelling of 509555045 in words is "five hundred nine million, five hundred fifty-five thousand, forty-five".