531305066 has 8 divisors (see below), whose sum is σ = 797194020. Its totient is φ = 265573728.

The previous prime is 531305057. The next prime is 531305069. The reversal of 531305066 is 660503135.

It can be written as a sum of positive squares in 2 ways, for example, as 530334841 + 970225 = 23029^2 + 985^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (531305069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30581 + ... + 44696.

Almost surely, 2^531305066 is an apocalyptic number.

531305066 is a deficient number, since it is larger than the sum of its proper divisors (265888954).

531305066 is a wasteful number, since it uses less digits than its factorization.

531305066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78808.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 531305066 is about 23050.0556615380. The cubic root of 531305066 is about 809.9309324841.

The spelling of 531305066 in words is "five hundred thirty-one million, three hundred five thousand, sixty-six".