51003222 has 16 divisors (see below), whose sum is σ = 102466560. Its totient is φ = 16924392.

The previous prime is 51003217. The next prime is 51003223. The reversal of 51003222 is 22230015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51003223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17722 + ... + 20397.

It is an arithmetic number, because the mean of its divisors is an integer number (6404160).

Almost surely, 2^51003222 is an apocalyptic number.

51003222 is an abundant number, since it is smaller than the sum of its proper divisors (51463338).

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

51003222 is a wasteful number, since it uses less digits than its factorization.

51003222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38347.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 51003222 is about 7141.6540101016. The cubic root of 51003222 is about 370.8507862790.

Adding to 51003222 its reverse (22230015), we get a palindrome (73233237).

The spelling of 51003222 in words is "fifty-one million, three thousand, two hundred twenty-two".