506531890 has 16 divisors (see below), whose sum is σ = 917030808. Its totient is φ = 201440896.

The previous prime is 506531843. The next prime is 506531891. The reversal of 506531890 is 98135605.

It can be written as a sum of positive squares in 4 ways, for example, as 349054489 + 157477401 = 18683^2 + 12549^2 .

It is not an unprimeable number, because it can be changed into a prime (506531891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144667 + ... + 148126.

Almost surely, 2^506531890 is an apocalyptic number.

506531890 is a deficient number, since it is larger than the sum of its proper divisors (410498918).

506531890 is a wasteful number, since it uses less digits than its factorization.

506531890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292973.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 506531890 is about 22506.2633504542. The cubic root of 506531890 is about 797.1418267597.

The spelling of 506531890 in words is "five hundred six million, five hundred thirty-one thousand, eight hundred ninety".