531260605 has 8 divisors (see below), whose sum is σ = 649541592. Its totient is φ = 416989248.

The previous prime is 531260581. The next prime is 531260623. The reversal of 531260605 is 506062135.

It can be written as a sum of positive squares in 4 ways, for example, as 35485849 + 495774756 = 5957^2 + 22266^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 531260605 - 2¹⁹ = 530736317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1002114 + ... + 1002643.

It is an arithmetic number, because the mean of its divisors is an integer number (81192699).

Almost surely, 2^531260605 is an apocalyptic number.

It is an amenable number.

531260605 is a deficient number, since it is larger than the sum of its proper divisors (118280987).

531260605 is a wasteful number, since it uses less digits than its factorization.

531260605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004815.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 531260605 is about 23049.0911968346. The cubic root of 531260605 is about 809.9083394730.

The spelling of 531260605 in words is "five hundred thirty-one million, two hundred sixty thousand, six hundred five".