51513122 has 8 divisors (see below), whose sum is σ = 77826000. Its totient is φ = 25571124.

The previous prime is 51513109. The next prime is 51513149. The reversal of 51513122 is 22131515.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 51513094 and 51513103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92372 + ... + 92927.

It is an arithmetic number, because the mean of its divisors is an integer number (9728250).

Almost surely, 2^51513122 is an apocalyptic number.

51513122 is a deficient number, since it is larger than the sum of its proper divisors (26312878).

51513122 is a wasteful number, since it uses less digits than its factorization.

51513122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185440.

The product of its digits is 300, while the sum is 20.

The square root of 51513122 is about 7177.2642420354. The cubic root of 51513122 is about 372.0825393986.

Adding to 51513122 its reverse (22131515), we get a palindrome (73644637).

The spelling of 51513122 in words is "fifty-one million, five hundred thirteen thousand, one hundred twenty-two".