51001120103 has 4 divisors (see below), whose sum is σ = 51016573608. Its totient is φ = 50985666600.

The previous prime is 51001120099. The next prime is 51001120129. The reversal of 51001120103 is 30102110015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51001120103 - 2² = 51001120099 is a prime.

It is a super-2 number, since 2×51001120103² (a number of 22 digits) 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 (51001120133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7721801 + ... + 7728402.

It is an arithmetic number, because the mean of its divisors is an integer number (12754143402).

Almost surely, 2^51001120103 is an apocalyptic number.

51001120103 is a deficient number, since it is larger than the sum of its proper divisors (15453505).

51001120103 is a wasteful number, since it uses less digits than its factorization.

51001120103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15453504.

The product of its (nonzero) digits is 30, while the sum is 14.

Adding to 51001120103 its reverse (30102110015), we get a palindrome (81103230118).

The spelling of 51001120103 in words is "fifty-one billion, one million, one hundred twenty thousand, one hundred three".