51061211 has 4 divisors (see below), whose sum is σ = 51318000. Its totient is φ = 50804424.

The previous prime is 51061193. The next prime is 51061249. The reversal of 51061211 is 11216015.

51061211 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 an emirpimes, since its reverse is a distinct semiprime: 11216015 = 5 ⋅2243203.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51061211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51061211.

It is not an unprimeable number, because it can be changed into a prime (51061271) 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, 128096 + ... + 128493.

It is an arithmetic number, because the mean of its divisors is an integer number (12829500).

Almost surely, 2^51061211 is an apocalyptic number.

51061211 is a deficient number, since it is larger than the sum of its proper divisors (256789).

51061211 is a wasteful number, since it uses less digits than its factorization.

51061211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256788.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 51061211 is about 7145.7127706059. The cubic root of 51061211 is about 370.9912814626.

Adding to 51061211 its reverse (11216015), we get a palindrome (62277226).

The spelling of 51061211 in words is "fifty-one million, sixty-one thousand, two hundred eleven".