51124521103 has 4 divisors (see below), whose sum is σ = 51125366248. Its totient is φ = 51123675960.

The previous prime is 51124521089. The next prime is 51124521139. The reversal of 51124521103 is 30112542115.

51124521103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51124521103 - 2³³ = 42534586511 is a prime.

It is a super-2 number, since 2×51124521103² (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 (51124521403) 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, 324201 + ... + 455362.

It is an arithmetic number, because the mean of its divisors is an integer number (12781341562).

Almost surely, 2^51124521103 is an apocalyptic number.

51124521103 is a deficient number, since it is larger than the sum of its proper divisors (845145).

51124521103 is an equidigital number, since it uses as much as digits as its factorization.

51124521103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845144.

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 51124521103 in words is "fifty-one billion, one hundred twenty-four million, five hundred twenty-one thousand, one hundred three".