51115103 has 8 divisors (see below), whose sum is σ = 55666800. Its totient is φ = 46651968.

The previous prime is 51115079. The next prime is 51115109. The reversal of 51115103 is 30151115.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51115103 is a prime.

It is a super-2 number, since 2×51115103² = 5225507509401218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51115109) 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, 20933 + ... + 23246.

It is an arithmetic number, because the mean of its divisors is an integer number (6958350).

Almost surely, 2^51115103 is an apocalyptic number.

51115103 is a deficient number, since it is larger than the sum of its proper divisors (4551697).

51115103 is a wasteful number, since it uses less digits than its factorization.

51115103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44281.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 51115103 is about 7149.4827085601. The cubic root of 51115103 is about 371.1217551426.

Adding to 51115103 its reverse (30151115), we get a palindrome (81266218).

The spelling of 51115103 in words is "fifty-one million, one hundred fifteen thousand, one hundred three".