506565256 has 8 divisors (see below), whose sum is σ = 949809870. Its totient is φ = 253282624.

The previous prime is 506565253. The next prime is 506565259. The reversal of 506565256 is 652565605.

It is an interprime number because it is at equal distance from previous prime (506565253) and next prime (506565259).

It can be written as a sum of positive squares in only one way, i.e., 485497156 + 21068100 = 22034^2 + 4590^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (506565253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31660321 + ... + 31660336.

Almost surely, 2^506565256 is an apocalyptic number.

506565256 is the 12031-st centered heptagonal number.

It is an amenable number.

506565256 is a deficient number, since it is larger than the sum of its proper divisors (443244614).

506565256 is a wasteful number, since it uses less digits than its factorization.

506565256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63320663 (or 63320659 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 40.

The square root of 506565256 is about 22507.0045985689. The cubic root of 506565256 is about 797.1593293433.

The spelling of 506565256 in words is "five hundred six million, five hundred sixty-five thousand, two hundred fifty-six".