51616122 has 16 divisors (see below), whose sum is σ = 108665760. Its totient is φ = 16299792.

The previous prime is 51616093. The next prime is 51616139. The reversal of 51616122 is 22161615.

It is a junction number, because it is equal to n+sod(n) for n = 51616092 and 51616101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226273 + ... + 226500.

It is an arithmetic number, because the mean of its divisors is an integer number (6791610).

Almost surely, 2^51616122 is an apocalyptic number.

51616122 is an abundant number, since it is smaller than the sum of its proper divisors (57049638).

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

51616122 is a wasteful number, since it uses less digits than its factorization.

51616122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452797.

The product of its digits is 720, while the sum is 24.

The square root of 51616122 is about 7184.4360947816. The cubic root of 51616122 is about 372.3303661351.

Adding to 51616122 its reverse (22161615), we get a palindrome (73777737).

The spelling of 51616122 in words is "fifty-one million, six hundred sixteen thousand, one hundred twenty-two".