509403245 has 16 divisors (see below), whose sum is σ = 660949632. Its totient is φ = 374664000.

The previous prime is 509403233. The next prime is 509403259. The reversal of 509403245 is 542304905.

It is a happy number.

It is not a de Polignac number, because 509403245 - 2²⁰ = 508354669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704 + ... + 31926.

It is an arithmetic number, because the mean of its divisors is an integer number (41309352).

Almost surely, 2^509403245 is an apocalyptic number.

It is an amenable number.

509403245 is a deficient number, since it is larger than the sum of its proper divisors (151546387).

509403245 is a wasteful number, since it uses less digits than its factorization.

509403245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31492.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 509403245 is about 22569.9633362573. The cubic root of 509403245 is about 798.6452304820.

The spelling of 509403245 in words is "five hundred nine million, four hundred three thousand, two hundred forty-five".