51316061 has 4 divisors (see below), whose sum is σ = 51332832. Its totient is φ = 51299292.

The previous prime is 51316043. The next prime is 51316063. The reversal of 51316061 is 16061315.

It is a happy number.

51316061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16061315 = 5 ⋅3212263.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51316061 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 (51316063) by changing a digit.

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, 2345 + ... + 10398.

It is an arithmetic number, because the mean of its divisors is an integer number (12833208).

Almost surely, 2^51316061 is an apocalyptic number.

It is an amenable number.

51316061 is a deficient number, since it is larger than the sum of its proper divisors (16771).

51316061 is a wasteful number, since it uses less digits than its factorization.

51316061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16770.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 51316061 is about 7163.5229461488. The cubic root of 51316061 is about 371.6074717428.

Adding to 51316061 its reverse (16061315), we get a palindrome (67377376).

The spelling of 51316061 in words is "fifty-one million, three hundred sixteen thousand, sixty-one".