51012122 has 16 divisors (see below), whose sum is σ = 89813760. Its totient is φ = 21271248.

The previous prime is 51012119. The next prime is 51012127. The reversal of 51012122 is 22121015.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 51012097 and 51012106.

It is not an unprimeable number, because it can be changed into a prime (51012127) 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, 48722 + ... + 49757.

It is an arithmetic number, because the mean of its divisors is an integer number (5613360).

Almost surely, 2^51012122 is an apocalyptic number.

51012122 is a deficient number, since it is larger than the sum of its proper divisors (38801638).

51012122 is a wasteful number, since it uses less digits than its factorization.

51012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98525.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 51012122 is about 7142.2770878761. The cubic root of 51012122 is about 370.8723560276.

Adding to 51012122 its reverse (22121015), we get a palindrome (73133137).

The spelling of 51012122 in words is "fifty-one million, twelve thousand, one hundred twenty-two".