530205551 has 4 divisors (see below), whose sum is σ = 531910704. Its totient is φ = 528500400.

The previous prime is 530205541. The next prime is 530205553. The reversal of 530205551 is 155502035.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-530205551 is a prime.

It is a super-2 number, since 2×530205551² = 562235852622427202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 530205551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530205553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852110 + ... + 852731.

It is an arithmetic number, because the mean of its divisors is an integer number (132977676).

Almost surely, 2^530205551 is an apocalyptic number.

530205551 is a deficient number, since it is larger than the sum of its proper divisors (1705153).

530205551 is a wasteful number, since it uses less digits than its factorization.

530205551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705152.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 530205551 is about 23026.1927161222. The cubic root of 530205551 is about 809.3718398648.

Adding to 530205551 its reverse (155502035), we get a palindrome (685707586).

The spelling of 530205551 in words is "five hundred thirty million, two hundred five thousand, five hundred fifty-one".