531046650 has 24 divisors (see below), whose sum is σ = 1316996064. Its totient is φ = 141612400.

The previous prime is 531046643. The next prime is 531046651. The reversal of 531046650 is 56640135.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (531046651) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1770006 + ... + 1770305.

It is an arithmetic number, because the mean of its divisors is an integer number (54874836).

Almost surely, 2^531046650 is an apocalyptic number.

531046650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

531046650 is an abundant number, since it is smaller than the sum of its proper divisors (785949414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531046650 is a wasteful number, since it uses less digits than its factorization.

531046650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540326 (or 3540321 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 531046650 is about 23044.4494401580. The cubic root of 531046650 is about 809.7995998673.

Adding to 531046650 its reverse (56640135), we get a palindrome (587686785).

The spelling of 531046650 in words is "five hundred thirty-one million, forty-six thousand, six hundred fifty".