51232103 has 4 divisors (see below), whose sum is σ = 55173048. Its totient is φ = 47291160.

The previous prime is 51232091. The next prime is 51232133. The reversal of 51232103 is 30123215.

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 51232103 - 2⁶ = 51232039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51232133) 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, 1970453 + ... + 1970478.

It is an arithmetic number, because the mean of its divisors is an integer number (13793262).

Almost surely, 2^51232103 is an apocalyptic number.

51232103 is a deficient number, since it is larger than the sum of its proper divisors (3940945).

51232103 is a wasteful number, since it uses less digits than its factorization.

51232103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940944.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 51232103 is about 7157.6604417924. The cubic root of 51232103 is about 371.4046992899.

Adding to 51232103 its reverse (30123215), we get a palindrome (81355318).

The spelling of 51232103 in words is "fifty-one million, two hundred thirty-two thousand, one hundred three".