530531905 has 4 divisors (see below), whose sum is σ = 636638292. Its totient is φ = 424425520.

The previous prime is 530531899. The next prime is 530531909. The reversal of 530531905 is 509135035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121198081 + 409333824 = 11009^2 + 20232^2 .

It is not a de Polignac number, because 530531905 - 2¹³ = 530523713 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (530531909) 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, 53053186 + ... + 53053195.

It is an arithmetic number, because the mean of its divisors is an integer number (159159573).

Almost surely, 2^530531905 is an apocalyptic number.

It is an amenable number.

530531905 is a deficient number, since it is larger than the sum of its proper divisors (106106387).

530531905 is a wasteful number, since it uses less digits than its factorization.

530531905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106106386.

The product of its (nonzero) digits is 10125, while the sum is 31.

The square root of 530531905 is about 23033.2782078453. The cubic root of 530531905 is about 809.5378682792.

The spelling of 530531905 in words is "five hundred thirty million, five hundred thirty-one thousand, nine hundred five".