51224211 has 16 divisors (see below), whose sum is σ = 77740320. Its totient is φ = 33315840.

The previous prime is 51224207. The next prime is 51224221. The reversal of 51224211 is 11242215.

It is not a de Polignac number, because 51224211 - 2² = 51224207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51224221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22030 + ... + 24243.

It is an arithmetic number, because the mean of its divisors is an integer number (4858770).

Almost surely, 2^51224211 is an apocalyptic number.

51224211 is a deficient number, since it is larger than the sum of its proper divisors (26516109).

51224211 is a wasteful number, since it uses less digits than its factorization.

51224211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46323 (or 46317 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 51224211 is about 7157.1091231027. The cubic root of 51224211 is about 371.3856274174.

Adding to 51224211 its reverse (11242215), we get a palindrome (62466426).

The spelling of 51224211 in words is "fifty-one million, two hundred twenty-four thousand, two hundred eleven".