51123122 has 16 divisors (see below), whose sum is σ = 80438400. Its totient is φ = 24339888.

The previous prime is 51123119. The next prime is 51123151. The reversal of 51123122 is 22132115.

It is a happy number.

It is a super-2 number, since 2×51123122² = 5227147206053768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51123122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3872 + ... + 10827.

It is an arithmetic number, because the mean of its divisors is an integer number (5027400).

Almost surely, 2^51123122 is an apocalyptic number.

51123122 is a deficient number, since it is larger than the sum of its proper divisors (29315278).

51123122 is a wasteful number, since it uses less digits than its factorization.

51123122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14785.

The product of its digits is 120, while the sum is 17.

The square root of 51123122 is about 7150.0434963712. The cubic root of 51123122 is about 371.1411614730.

Adding to 51123122 its reverse (22132115), we get a palindrome (73255237).

The spelling of 51123122 in words is "fifty-one million, one hundred twenty-three thousand, one hundred twenty-two".