530278861 has 4 divisors (see below), whose sum is σ = 606032992. Its totient is φ = 454524732.

The previous prime is 530278831. The next prime is 530278873. The reversal of 530278861 is 168872035.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 530278861 - 2¹³ = 530270669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530278831) 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, 37877055 + ... + 37877068.

It is an arithmetic number, because the mean of its divisors is an integer number (151508248).

Almost surely, 2^530278861 is an apocalyptic number.

It is an amenable number.

530278861 is a deficient number, since it is larger than the sum of its proper divisors (75754131).

530278861 is an equidigital number, since it uses as much as digits as its factorization.

530278861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75754130.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 530278861 is about 23027.7845438939. The cubic root of 530278861 is about 809.4091413196.

The spelling of 530278861 in words is "five hundred thirty million, two hundred seventy-eight thousand, eight hundred sixty-one".