51304113 has 24 divisors (see below), whose sum is σ = 89676288. Its totient is φ = 27591552.

The previous prime is 51304109. The next prime is 51304129. The reversal of 51304113 is 31140315.

It is not a de Polignac number, because 51304113 - 2² = 51304109 is a prime.

It is a super-2 number, since 2×51304113² = 5264224021433538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51304133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22881 + ... + 25022.

It is an arithmetic number, because the mean of its divisors is an integer number (3736512).

Almost surely, 2^51304113 is an apocalyptic number.

It is an amenable number.

51304113 is a deficient number, since it is larger than the sum of its proper divisors (38372175).

51304113 is a wasteful number, since it uses less digits than its factorization.

51304113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47933 (or 47930 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 51304113 is about 7162.6889503873. The cubic root of 51304113 is about 371.5786288515.

Adding to 51304113 its reverse (31140315), we get a palindrome (82444428).

The spelling of 51304113 in words is "fifty-one million, three hundred four thousand, one hundred thirteen".