51040222 has 16 divisors (see below), whose sum is σ = 81196992. Its totient is φ = 23979520.

The previous prime is 51040217. The next prime is 51040259. The reversal of 51040222 is 22204015.

It is a junction number, because it is equal to n+sod(n) for n = 51040196 and 51040205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36822 + ... + 38182.

It is an arithmetic number, because the mean of its divisors is an integer number (5074812).

Almost surely, 2^51040222 is an apocalyptic number.

51040222 is a deficient number, since it is larger than the sum of its proper divisors (30156770).

51040222 is a wasteful number, since it uses less digits than its factorization.

51040222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 51040222 is about 7144.2439767970. The cubic root of 51040222 is about 370.9404418068.

Adding to 51040222 its reverse (22204015), we get a palindrome (73244237).

The spelling of 51040222 in words is "fifty-one million, forty thousand, two hundred twenty-two".