53000321 has 4 divisors (see below), whose sum is σ = 57818544. Its totient is φ = 48182100.

The previous prime is 53000279. The next prime is 53000333. The reversal of 53000321 is 12300035.

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 a de Polignac number, because none of the positive numbers 2^k-53000321 is a prime.

It is a super-2 number, since 2×53000321² = 5618068052206082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53000296 and 53000305.

It is not an unprimeable number, because it can be changed into a prime (53000351) 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, 2409095 + ... + 2409116.

It is an arithmetic number, because the mean of its divisors is an integer number (14454636).

Almost surely, 2^53000321 is an apocalyptic number.

It is an amenable number.

53000321 is a deficient number, since it is larger than the sum of its proper divisors (4818223).

53000321 is a wasteful number, since it uses less digits than its factorization.

53000321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818222.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 53000321 is about 7280.1319356177. The cubic root of 53000321 is about 375.6293337651.

Adding to 53000321 its reverse (12300035), we get a palindrome (65300356).

The spelling of 53000321 in words is "fifty-three million, three hundred twenty-one", and thus it is an aban number.