51043211 has 4 divisors (see below), whose sum is σ = 51058800. Its totient is φ = 51027624.

The previous prime is 51043207. The next prime is 51043229. The reversal of 51043211 is 11234015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51043211 - 2² = 51043207 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 51043211.

It is not an unprimeable number, because it can be changed into a prime (51043261) 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, 776 + ... + 10133.

It is an arithmetic number, because the mean of its divisors is an integer number (12764700).

Almost surely, 2^51043211 is an apocalyptic number.

51043211 is a deficient number, since it is larger than the sum of its proper divisors (15589).

51043211 is a wasteful number, since it uses less digits than its factorization.

51043211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15588.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 51043211 is about 7144.4531631189. The cubic root of 51043211 is about 370.9476826279.

Adding to 51043211 its reverse (11234015), we get a palindrome (62277226).

The spelling of 51043211 in words is "fifty-one million, forty-three thousand, two hundred eleven".