530200021 has 4 divisors (see below), whose sum is σ = 570984652. Its totient is φ = 489415392.

The previous prime is 530200009. The next prime is 530200039. The reversal of 530200021 is 120002035.

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 90459121 + 439740900 = 9511^2 + 20970^2 .

It is a cyclic number.

It is not a de Polignac number, because 530200021 - 2¹⁷ = 530068949 is a prime.

It is a super-2 number, since 2×530200021² = 562224124536800882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 40784617 = 530200021 / (5 + 3 + 0 + 2 + 0 + 0 + 0 + 2 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 530199974 and 530200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530200061) 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, 20392296 + ... + 20392321.

It is an arithmetic number, because the mean of its divisors is an integer number (142746163).

Almost surely, 2^530200021 is an apocalyptic number.

It is an amenable number.

530200021 is a deficient number, since it is larger than the sum of its proper divisors (40784631).

530200021 is a wasteful number, since it uses less digits than its factorization.

530200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40784630.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 530200021 is about 23026.0726351673. The cubic root of 530200021 is about 809.3690259613.

Adding to 530200021 its reverse (120002035), we get a palindrome (650202056).

The spelling of 530200021 in words is "five hundred thirty million, two hundred thousand, twenty-one".