509492505 has 32 divisors (see below), whose sum is σ = 859622400. Its totient is φ = 256969152.

The previous prime is 509492461. The next prime is 509492539. The reversal of 509492505 is 505294905.

It is not a de Polignac number, because 509492505 - 2¹⁰ = 509491481 is a prime.

It is a super-2 number, since 2×509492505² = 519165225302350050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

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 31 ways as a sum of consecutive naturals, for example, 205966 + ... + 208424.

It is an arithmetic number, because the mean of its divisors is an integer number (26863200).

Almost surely, 2^509492505 is an apocalyptic number.

It is an amenable number.

509492505 is a deficient number, since it is larger than the sum of its proper divisors (350129895).

509492505 is a wasteful number, since it uses less digits than its factorization.

509492505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213.

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 509492505 is about 22571.9406564876. The cubic root of 509492505 is about 798.6918751986.

The spelling of 509492505 in words is "five hundred nine million, four hundred ninety-two thousand, five hundred five".