51320530 has 8 divisors (see below), whose sum is σ = 92376972. Its totient is φ = 20528208.

The previous prime is 51320527. The next prime is 51320597. The reversal of 51320530 is 3502315.

51320530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 48399849 + 2920681 = 6957^2 + 1709^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 51320498 and 51320507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2566017 + ... + 2566036.

Almost surely, 2^51320530 is an apocalyptic number.

51320530 is a deficient number, since it is larger than the sum of its proper divisors (41056442).

51320530 is a wasteful number, since it uses less digits than its factorization.

51320530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5132060.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 51320530 is about 7163.8348668852. The cubic root of 51320530 is about 371.6182589151.

Adding to 51320530 its reverse (3502315), we get a palindrome (54822845).

The spelling of 51320530 in words is "fifty-one million, three hundred twenty thousand, five hundred thirty".