51022212 has 48 divisors (see below), whose sum is σ = 121347072. Its totient is φ = 16683520.

The previous prime is 51022159. The next prime is 51022217. The reversal of 51022212 is 21222015.

It is a super-2 number, since 2×51022212² = 5206532234745888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51022191 and 51022200.

It is not an unprimeable number, because it can be changed into a prime (51022217) 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, 258898 + ... + 259094.

It is an arithmetic number, because the mean of its divisors is an integer number (2528064).

Almost surely, 2^51022212 is an apocalyptic number.

It is an amenable number.

51022212 is an abundant number, since it is smaller than the sum of its proper divisors (70324860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51022212 is a wasteful number, since it uses less digits than its factorization.

51022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 51022212 is about 7142.9834103125. The cubic root of 51022212 is about 370.8968067871.

Adding to 51022212 its reverse (21222015), we get a palindrome (72244227).

It can be divided in two parts, 510 and 22212, that added together give a palindrome (22722).

The spelling of 51022212 in words is "fifty-one million, twenty-two thousand, two hundred twelve".