506278531 has 16 divisors (see below), whose sum is σ = 560770560. Its totient is φ = 453229920.

The previous prime is 506278519. The next prime is 506278583. The reversal of 506278531 is 135872605.

It is not a de Polignac number, because 506278531 - 2⁵ = 506278499 is a prime.

It is a super-2 number, since 2×506278531² = 512635901903035922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (506278831) 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, 593101 + ... + 593953.

It is an arithmetic number, because the mean of its divisors is an integer number (35048160).

Almost surely, 2^506278531 is an apocalyptic number.

506278531 is a deficient number, since it is larger than the sum of its proper divisors (54492029).

506278531 is a wasteful number, since it uses less digits than its factorization.

506278531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 506278531 is about 22500.6340132895. The cubic root of 506278531 is about 797.0088988090.

The spelling of 506278531 in words is "five hundred six million, two hundred seventy-eight thousand, five hundred thirty-one".