51810122 has 32 divisors (see below), whose sum is σ = 99816192. Its totient is φ = 19603584.

The previous prime is 51810119. The next prime is 51810127. The reversal of 51810122 is 22101815.

It is a happy number.

51810122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51810094 and 51810103.

It is not an unprimeable number, because it can be changed into a prime (51810127) 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 15 ways as a sum of consecutive naturals, for example, 2003 + ... + 10374.

It is an arithmetic number, because the mean of its divisors is an integer number (3119256).

Almost surely, 2^51810122 is an apocalyptic number.

51810122 is a deficient number, since it is larger than the sum of its proper divisors (48006070).

51810122 is a wasteful number, since it uses less digits than its factorization.

51810122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12422.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 51810122 is about 7197.9248398410. The cubic root of 51810122 is about 372.7962527714.

Adding to 51810122 its reverse (22101815), we get a palindrome (73911937).

The spelling of 51810122 in words is "fifty-one million, eight hundred ten thousand, one hundred twenty-two".