51116222 has 8 divisors (see below), whose sum is σ = 77419056. Its totient is φ = 25309872.

The previous prime is 51116173. The next prime is 51116249. The reversal of 51116222 is 22261115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51116222² = 5225736303106568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51116194 and 51116203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123863 + ... + 124274.

It is an arithmetic number, because the mean of its divisors is an integer number (9677382).

Almost surely, 2^51116222 is an apocalyptic number.

51116222 is a deficient number, since it is larger than the sum of its proper divisors (26302834).

51116222 is a wasteful number, since it uses less digits than its factorization.

51116222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248242.

The product of its digits is 240, while the sum is 20.

The square root of 51116222 is about 7149.5609655419. The cubic root of 51116222 is about 371.1244632933.

Adding to 51116222 its reverse (22261115), we get a palindrome (73377337).

The spelling of 51116222 in words is "fifty-one million, one hundred sixteen thousand, two hundred twenty-two".