530001540 has 72 divisors (see below), whose sum is σ = 1623644568. Its totient is φ = 139929600.

The previous prime is 530001539. The next prime is 530001541. The reversal of 530001540 is 45100035.

It is an interprime number because it is at equal distance from previous prime (530001539) and next prime (530001541).

It can be written as a sum of positive squares in 4 ways, for example, as 41679936 + 488321604 = 6456^2 + 22098^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (530001541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3604 + ... + 32756.

It is an arithmetic number, because the mean of its divisors is an integer number (22550619).

Almost surely, 2^530001540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 530001540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (811822284).

530001540 is an abundant number, since it is smaller than the sum of its proper divisors (1093643028).

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

530001540 is a wasteful number, since it uses less digits than its factorization.

530001540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29269 (or 29264 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 530001540 is about 23021.7623130811. The cubic root of 530001540 is about 809.2680172745.

Adding to 530001540 its reverse (45100035), we get a palindrome (575101575).

The spelling of 530001540 in words is "five hundred thirty million, one thousand, five hundred forty".