51053321 has 4 divisors (see below), whose sum is σ = 55694544. Its totient is φ = 46412100.

The previous prime is 51053293. The next prime is 51053339. The reversal of 51053321 is 12335015.

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 51053321 - 2¹⁸ = 50791177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51053293 and 51053302.

It is not an unprimeable number, because it can be changed into a prime (51053381) 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, 2320595 + ... + 2320616.

It is an arithmetic number, because the mean of its divisors is an integer number (13923636).

Almost surely, 2^51053321 is an apocalyptic number.

It is an amenable number.

51053321 is a deficient number, since it is larger than the sum of its proper divisors (4641223).

51053321 is a wasteful number, since it uses less digits than its factorization.

51053321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4641222.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 51053321 is about 7145.1606699920. The cubic root of 51053321 is about 370.9721719016.

Adding to 51053321 its reverse (12335015), we get a palindrome (63388336).

The spelling of 51053321 in words is "fifty-one million, fifty-three thousand, three hundred twenty-one".