51124211 has 4 divisors (see below), whose sum is σ = 51430512. Its totient is φ = 50817912.

The previous prime is 51124207. The next prime is 51124217. The reversal of 51124211 is 11242115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11242115 = 5 ⋅2248423.

It is a cyclic number.

It is not a de Polignac number, because 51124211 - 2² = 51124207 is a prime.

It is a super-2 number, since 2×51124211² = 5227369900745042, which contains 22 as substring.

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 51124211.

It is not an unprimeable number, because it can be changed into a prime (51124217) 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, 152900 + ... + 153233.

It is an arithmetic number, because the mean of its divisors is an integer number (12857628).

Almost surely, 2^51124211 is an apocalyptic number.

51124211 is a deficient number, since it is larger than the sum of its proper divisors (306301).

51124211 is a wasteful number, since it uses less digits than its factorization.

51124211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306300.

The product of its digits is 80, while the sum is 17.

The square root of 51124211 is about 7150.1196493485. The cubic root of 51124211 is about 371.1437967441.

Adding to 51124211 its reverse (11242115), we get a palindrome (62366326).

The spelling of 51124211 in words is "fifty-one million, one hundred twenty-four thousand, two hundred eleven".