51493222 has 16 divisors (see below), whose sum is σ = 84412944. Its totient is φ = 23364000.

The previous prime is 51493219. The next prime is 51493223. The reversal of 51493222 is 22239415.

51493222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51493223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12772 + ... + 16312.

It is an arithmetic number, because the mean of its divisors is an integer number (5275809).

Almost surely, 2^51493222 is an apocalyptic number.

51493222 is a deficient number, since it is larger than the sum of its proper divisors (32919722).

51493222 is a wasteful number, since it uses less digits than its factorization.

51493222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4215.

The product of its digits is 4320, while the sum is 28.

The square root of 51493222 is about 7175.8777860273. The cubic root of 51493222 is about 372.0346202412.

It can be divided in two parts, 51493 and 222, that added together give a palindrome (51715).

The spelling of 51493222 in words is "fifty-one million, four hundred ninety-three thousand, two hundred twenty-two".