506509287 has 16 divisors (see below), whose sum is σ = 689516928. Its totient is φ = 330613920.

The previous prime is 506509249. The next prime is 506509301. The reversal of 506509287 is 782905605.

It is not a de Polignac number, because 506509287 - 2²² = 502314983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506509207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80112 + ... + 86202.

It is an arithmetic number, because the mean of its divisors is an integer number (43094808).

Almost surely, 2^506509287 is an apocalyptic number.

506509287 is a deficient number, since it is larger than the sum of its proper divisors (183007641).

506509287 is a wasteful number, since it uses less digits than its factorization.

506509287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 506509287 is about 22505.7611957472. The cubic root of 506509287 is about 797.1299696157.

The spelling of 506509287 in words is "five hundred six million, five hundred nine thousand, two hundred eighty-seven".