51304122 has 24 divisors (see below), whose sum is σ = 115992864. Its totient is φ = 16357704.

The previous prime is 51304109. The next prime is 51304129. The reversal of 51304122 is 22140315.

It is a super-2 number, since 2×51304122² = 5264225868381768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 51304095 and 51304104.

It is not an unprimeable number, because it can be changed into a prime (51304129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61548 + ... + 62375.

It is an arithmetic number, because the mean of its divisors is an integer number (4833036).

Almost surely, 2^51304122 is an apocalyptic number.

51304122 is an abundant number, since it is smaller than the sum of its proper divisors (64688742).

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

51304122 is a wasteful number, since it uses less digits than its factorization.

51304122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123954 (or 123951 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 51304122 is about 7162.6895786429. The cubic root of 51304122 is about 371.5786505795.

Adding to 51304122 its reverse (22140315), we get a palindrome (73444437).

The spelling of 51304122 in words is "fifty-one million, three hundred four thousand, one hundred twenty-two".